Snoep Jaapjan D, Morabia Alfredo, Hernández-Díaz Sonia, Hernán Miguel A, Vandenbroucke Jan P
Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands, Center for the Biology of Natural Systems, Queens College, City University of New York, New York, USA, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA, Department of Epidemiology, Departments of Epidemiology and Biostatistics, Harvard School of Public Health, Boston, MA, USA and Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA.
Int J Epidemiol. 2014 Apr;43(2):515-21. doi: 10.1093/ije/dyu026. Epub 2014 Feb 28.