Response to letter by Forike et al.: more rigorous, not less, external validation is needed.
Department of Cardiology, Bern University Hospital, Bern, Switzerland.
George C M
GC
Siontis
Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Statistics, Stanford University School of Humanities and Sciences, 1265 Welch Rd., Stanford, CA 94305, USA. Electronic address: jioannid@stanford.edu.
John P A
JP
Ioannidis
D006801:Humans; D015233:Models, Statistical; D012306:Risk