Commentary: External validity of results of randomized trials: disentangling a complex concept.
Rothwell
Peter M
PM
University Department of Clinical Neurology, Level 6, West Wing, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK. peter.rothwell@clneuro.ox.ac.uk
D015981:Epidemiologic Factors; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012107:Research Design