Skip to content

Home Search Authors Pakistan News Saved

SciRah

SciRah does not host or store research papers. Results come live from free, official scholarly APIs, and every paper links back to its original source.

Data sources

OpenAlex
Semantic Scholar
Crossref
CORE
arXiv
PubMed

Privacy policy Terms of service

O. Kherad · SciRah

Researcher profile · Semantic Scholar

O. Kherad

Share profile

O. Kherad — researcher profile on SciRah

h-index: 23
Works: 121
Citations: 2,372

Most-cited papers

["Less is more"].
S. Regard, J. Gaspoz, O. Kherad
2013Revue medicale suisse542 citations
Semantic Scholar
Split-Dose Preparations Are Superior to Day-Before Bowel Cleansing Regimens: A Meta-analysis.
M. Martel, A. Barkun, C. Ménard, S. Restellini +2 more
2015Gastroenterology232 citations
Semantic Scholar
Comparison of arthroscopic and open Latarjet with a learning curve analysis
G. Cunningham, S. Benchouk, O. Kherad, A. Lädermann
2016Knee Surgery, Sports Traumatology, Arthroscopy133 citations
Semantic Scholar
Prospective evaluation of clinical and radiologic factors predicting return to activity within 6 months after arthroscopic rotator cuff repair.
P. Collin, A. Abdullah, O. Kherad, S. Gain +2 more
2015Journal of shoulder and elbow surgery83 citations Open access
Semantic Scholar
Reverse shoulder arthroplasty in patients with pre-operative impairment of the deltoid muscle.
A. Lädermann, G. Walch, Patrick J. Denard, P. Collin +5 more
2013The Bone & Joint Journal74 citations
Semantic Scholar
Correlation Between American Shoulder and Elbow Surgeons and Single Assessment Numerical Evaluation Score After Rotator Cuff or SLAP Repair.
G. Cunningham, A. Lädermann, Patrick J. Denard, O. Kherad +1 more
2015Arthroscopy: The Journal of Arthroscopy And Related68 citations Open access
Semantic Scholar
Seroprevalence of anti-SARS-CoV-2 antibodies 6 months into the vaccination campaign in Geneva, Switzerland, 1 June to 7 July 2021
S. Stringhini, M. Zaballa, N. Pullen, J. Perez-Saez +19 more
2021Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin61 citations Open access
Semantic Scholar
Faecal Calprotectin Predicts Endoscopic and Histological Activity in Clinically Quiescent Ulcerative Colitis.
L. Hart, M. Chavannes, O. Kherad, C. Maedler +7 more
2019Journal of Crohn's & Colitis58 citations Open access
Semantic Scholar
Seroprevalence of anti-SARS-CoV-2 antibodies and cross-variant neutralization capacity after the Omicron BA.2 wave in Geneva, Switzerland: a population-based study
M. Zaballa, J. Perez-Saez, C. de Mestral, N. Pullen +25 more
2022The Lancet Regional Health - Europe50 citations Open access
Semantic Scholar
Clinical Parameters Correlate With Endoscopic Activity of Ulcerative Colitis: A Systematic Review.
S. Restellini, C. Chao, M. Martel, A. Barkun +7 more
2019Clinical Gastroenterology and Hepatology49 citations Open access
Semantic Scholar
Systematic review with meta‐analysis: placebo rates in induction and maintenance trials of Crohn's disease
V. Jairath, G. Zou, C. Parker, John K. Macdonald +21 more
2017Alimentary Pharmacology and Therapeutics45 citations
Semantic Scholar
Persistence of anti-SARS-CoV-2 antibodies: immunoassay heterogeneity and implications for serosurveillance
J. Perez-Saez, M. Zaballa, S. Yerly, D. Andrey +12 more
2021Clinical Microbiology and Infection42 citations Open access
Semantic Scholar
Regulatory approval of COVID-19 vaccine for restricted use in clinical trial mode
S. Stringhini, M. Zaballa, J. Perez-Saez, N. Pullen +18 more
2021Lancet. Infectious Diseases (Print)41 citations Open access
Semantic Scholar
Large variation in anti-SARS-CoV-2 antibody prevalence among essential workers in Geneva, Switzerland
S. Stringhini, M. Zaballa, N. Pullen, C. de Mestral +17 more
2021Nature Communications39 citations Open access
Semantic Scholar
Therapeutic Drug Monitoring Guides the Management of Crohn's Patients with Secondary Loss of Response to Adalimumab.
S. Restellini, C. Chao, P. Lakatos, A. Aruljothy +6 more
2018Inflammatory Bowel Diseases39 citations Open access
Semantic Scholar
The challenge of implementing Less is More medicine: A European perspective.
O. Kherad, Nathan Peiffer-Smadja, Lina Karlafti, M. Lember +20 more
2020European journal of internal medicine32 citations Open access
Semantic Scholar
Specchio-COVID19 cohort study: a longitudinal follow-up of SARS-CoV-2 serosurvey participants in the canton of Geneva, Switzerland
H. Baysson, Francesco Pennachio, Ania Wisniak, Maria Eugenia Zabella +13 more
2022BMJ Open31 citations Open access
Semantic Scholar
Systematic review with meta-analysis: limited benefits from early colonoscopy in acute lower gastrointestinal bleeding.
O. Kherad, S. Restellini, Majid Abdulrahman Almadi, L. Strate +5 more
2020Alimentary Pharmacology and Therapeutics26 citations
Semantic Scholar
Which Patient-Related Factors Determine Optimal Bowel Preparation?
M. Martel, C. Ménard, S. Restellini, O. Kherad +3 more
2018Current treatment options in gastroenterology26 citations
Semantic Scholar
A population-based serological study of post-COVID syndrome prevalence and risk factors in children and adolescents
R. Dumont, V. Richard, E. Lorthe, A. Loizeau +63 more
2022Nature Communications24 citations Open access
Semantic Scholar
Long term anti-SARS-CoV-2 antibody kinetics and correlate of protection against Omicron BA.1/BA.2 infection
J. Perez-Saez, M. Zaballa, J. Lamour, S. Yerly +57 more
2022medRxiv21 citations Open access
Semantic Scholar
Outcomes following restrictive or liberal red blood cell transfusion in patients with lower gastrointestinal bleeding
O. Kherad, S. Restellini, M. Martel, M. Sey +4 more
2019Alimentary Pharmacology and Therapeutics20 citations
Semantic Scholar
Systematic review and meta-analysis of colon cleansing preparations in patients with inflammatory bowel disease
S. Restellini, O. Kherad, T. Bessissow, C. Ménard +4 more
2017World Journal of Gastroenterology20 citations Open access
Semantic Scholar
Overuse of plain abdominal radiography in emergency departments: a retrospective cohort study
C. L. Bertin, Simon Ponthus, Hari Vivekanantham, P. Poletti +2 more
2019BMC Health Services Research19 citations Open access
Semantic Scholar
Checklist feasibility and impact in gastrointestinal endoscopy: a systematic review and narrative synthesis
Véronique Bitar, M. Martel, S. Restellini, A. Barkun +1 more
2021Endoscopy International Open17 citations Open access
Semantic Scholar
Comparative Evaluation of the ABC Score to Other Risk Stratification Scales in Managing High-risk Patients Presenting With Acute Upper Gastrointestinal Bleeding
O. Kherad, S. Restellini, Majid Abdulrahman Almadi, M. Martel +1 more
2022Journal of Clinical Gastroenterology15 citations
Semantic Scholar
Implementation of a checklist before colonoscopy: a quality improvement initiative
O. Kherad, S. Restellini, C. Ménard, M. Martel +1 more
2017Endoscopy15 citations
Semantic Scholar
General health check-ups: To check or not to check? A question of choosing wisely.
O. Kherad, A. V. Carneiro
2023European journal of internal medicine14 citations Open access
Semantic Scholar
Inappropriateness of Repeated Laboratory and Radiological Tests for Transferred Emergency Department Patients
J. Bertrand, C. Fehlmann, O. Grosgurin, F. Sarasin +1 more
2019Journal of Clinical Medicine14 citations Open access
Semantic Scholar
Do adjuvants add to the efficacy and tolerance of bowel preparations? A meta-analysis of randomized trials
S. Restellini, O. Kherad, C. Ménard, M. Martel +1 more
2017Endoscopy14 citations
Semantic Scholar
Occupational risk of SARS-CoV-2 infection and reinfection during the second pandemic surge: a cohort study
Antonio Leidi, Amandine Berner, R. Dumont, Richard Dubos +14 more
2021Occupational and Environmental Medicine12 citations Open access
Semantic Scholar
Polyethylene glycol versus sodium picosulfalte bowel preparation in the setting of a colorectal cancer screening program.
O. Kherad, S. Restellini, M. Martel, A. Barkun
2015Canadian Journal of Gastroenterology and Hepatology12 citations Open access
Semantic Scholar
Proton pump inhibitors for upper gastrointestinal bleeding.
O. Kherad, S. Restellini, M. Martel, A. Barkun
2019Best practice & research. Clinical gastroenterology11 citations
Semantic Scholar
Cannabinoid Hyperemesis Syndrome: A Case Report of Cyclic Severe Hyperemesis and Abdominal Pain with Long-Term Cannabis Use
J. Hermes-Laufer, Lola Del Puppo, I. Inan, F. Troillet +1 more
2016Case Reports in Gastrointestinal Medicine11 citations Open access
Semantic Scholar
Is Acute Exacerbation of COPD (AECOPD) Related to Viral Infection Associated with Subsequent Mortality or Exacerbation Rate?
O. Kherad, P. Bridevaux, L. Kaiser, J. Janssens +1 more
2014The Open Respiratory Medicine Journal9 citations Open access
Semantic Scholar
Comparison of shoulder strength assessment in scaption with an isometric dynamometer and a weighing machine: a pilot study
P. Collin, B. H. Banarji, Patrick J. Denard, O. Kherad +1 more
2018JSES Open Access8 citations Open access
Semantic Scholar
[Bone tuberculosis: when consider this diagnosis?].
Lola Del Puppo, J. Janssens, O. Kherad, A. Younossian +1 more
2016Revue medicale suisse8 citations
Semantic Scholar
Intestinal Ultrasonography Diagnostic Performance and Feasibility in IBD during Pregnancy: A Systematic Review and Narrative Synthesis
J. Pillet, Julia Voirol-Perrin, M. Martel, O. Kherad +1 more
2024Inflammatory Intestinal Diseases7 citations Open access
Semantic Scholar
Persistence and detection of anti-SARS-CoV-2 antibodies: immunoassay heterogeneity and implications for serosurveillance
J. Perez-Saez, M. Zaballa, S. Yerly, D. Andrey +12 more
2021medRxiv7 citations Open access
Semantic Scholar
Low endoscopy bleeding risk in patients with congenital bleeding disorders
M. Tomaszewski, M. Bienz, O. Kherad, S. Restellini +4 more
2019Haemophilia7 citations
Semantic Scholar
Seroprevalence of anti-SARS-CoV-2 antibodies and cross-variant neutralization capacity after the Omicron BA.2 wave in Geneva, Switzerland
M. Zaballa, J. Perez-Saez, C. D. de Mestral, N. Pullen +26 more
2022medRxiv6 citations Open access
Semantic Scholar
Seroprevalence of anti-SARS-CoV-2 antibodies six months into the vaccination campaign in Geneva, Switzerland
S. Stringhini, M. Zaballa, N. Pullen, J. Perez-Saez +19 more
2021medRxiv6 citations Open access
Semantic Scholar
Association between SARS-CoV-2 Seroprevalence in Nursing Home Staff and Resident COVID-19 Cases and Mortality: A Cross-Sectional Study
Ania Wisniak, Lakshmi Krishna Menon, R. Dumont, N. Pullen +12 more
2021Viruses6 citations Open access
Semantic Scholar
Physician Assessment and Feedback During Quality Circle to Reduce Low-Value Services in Outpatients: a Pre-Post Quality Improvement Study
O. Kherad, K. Selby, M. Martel, Henrique da Costa +3 more
2021Journal of general internal medicine6 citations Open access
Semantic Scholar
Unenhanced computed tomography (CT) utility for triage at the emergency department during COVID-19 pandemic
I. Skalidis, V. Nguyen, Hugo Bothorel, L. Poli +4 more
2020American Journal of Emergency Medicine6 citations Open access
Semantic Scholar
Correction: Do adjuvants add to the efficacy and tolerance of bowel preparations? A meta-analysis of randomized trials
S. Restellini, O. Kherad, C. Ménard, M. Martel +1 more
2017Endoscopy5 citations
Semantic Scholar
Effect of hydrosoluble vitamin E on erythrocyte membrane lipid composition in patients with advanced cirrhosis: An open‐label pilot trial
S. Restellini, M. Alaei, T. Matthes, O. Kherad +2 more
2015Hepatology Research5 citations Open access
Semantic Scholar
Personal protective equipment portraits in the era of COVID-19
Christopher Hansen-Barkun, O. Kherad, A. Donovan, A. Prashad +1 more
2022European journal of internal medicine4 citations Open access
Semantic Scholar
[Atypical scurvy associated with anorexia nervosa].
R. André, A. Gabrielli, E. Laffitte, O. Kherad
2017Annales de dermatologie et de vénéréologie4 citations
Semantic Scholar
A new screening tool for SARS-CoV-2 infection based on self-reported patient clinical characteristics: the COV19-ID score
Pablo Diaz Badial, Hugo Bothorel, O. Kherad, P. Dussoix +2 more
2022BMC Infectious Diseases3 citations Open access
Semantic Scholar

Frequent co-authors

Invite them to SciRah by sharing their profile.

S. Restellini×17
Invite
S. Restellini — researcher profile on SciRah
M. Martel×14
Invite
M. Martel — researcher profile on SciRah
A. Barkun×14
Invite
A. Barkun — researcher profile on SciRah
S. Stringhini×13
Invite
S. Stringhini — researcher profile on SciRah

×13

Invite

D. Pittet — researcher profile on SciRah

Invite

M. Zaballa — researcher profile on SciRah

J. Balavoine×12

Invite

J. Balavoine — researcher profile on SciRah

Invite

A. Azman — researcher profile on SciRah

F. Chappuis×11

Invite

F. Chappuis — researcher profile on SciRah

I. Guessous×11

Invite

I. Guessous — researcher profile on SciRah

Invite

N. Pullen — researcher profile on SciRah

Invite

H. Baysson — researcher profile on SciRah