[1] Tech Univ Munich, Inst Hist & Eth Med, TUM Sch Med, Munich, Germany
[2] Univ Basel, CLEAR Methods Ctr, Dept Clin Res, Div Clin Epidemiol, Basel, Switzerland
[3] Univ Hosp Basel, Basel, Switzerland
[4] McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada