Rafael J. Sierra

A Systematic Approach to the Plain Radiographic Evaluation of the Young Adult Hip

John C. Clohisy, John C. Carlisle, Paul E. Beaulé et al. · Journal of Bone and Joint Surgery · 2008 · 1.2K citations · Full text

Medicine, Orthopaedic Surgery, Radiology +15

COVID-19 vaccine coverage in health-care workers in England and effectiveness of BNT162b2 mRNA vaccine against infection (SIREN): a prospective, multicentre, cohort study

Victoria Hall, Sarah Foulkes, Ayoub Saei et al. · The Lancet · 2021 · 837 citations · Full text

Veterinary Medicine, Immunology, Infectious Diseases +14

SARS-CoV-2 infection rates of antibody-positive compared with antibody-negative health-care workers in England: a large, multicentre, prospective cohort study (SIREN)

Victoria Hall, Sarah Foulkes, André Charlett et al. · The Lancet · 2021 · 738 citations · Full text

Veterinary Medicine, Immunology, Infectious Diseases +12

Simulator Training for Laparoscopic Suturing Using Performance Goals Translates to the Operating Room

James R. Korndorffer, Rafael J. Sierra, Cheri Touchard et al. · Journal of the American College of Surgeons · 2005 · 415 citations

Nursing, Surgery, Human Performance +14

Ischial Spine Projection into the Pelvis

Fabian Kalberer, Rafael J. Sierra, Sanjeev Madan et al. · Clinical Orthopaedics and Related Research · 2008 · 335 citations · Full text

Medicine, Orthopaedic Surgery, Orthopedic Surgery +12