1. Meta-research Innovation Center at Stanford, Stanford University School of Medicine, Stanford, California (P.J.)
2. Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland (T.I.)
3. Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, Maryland (E.R.-C.)
4. Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, California (S.N.G.).