Ralph R Frerichs1. 1. Ralph R. Frerichs is professor emeritus with the Department of Epidemiology, University of California, Los Angeles Fielding School of Public Health.
Authors: Ezra J Barzilay; Nicolas Schaad; Roc Magloire; Kam S Mung; Jacques Boncy; Georges A Dahourou; Eric D Mintz; Maria W Steenland; John F Vertefeuille; Jordan W Tappero Journal: N Engl J Med Date: 2013-01-09 Impact factor: 91.245