1 Arbor Research Collaborative for Health, Ann Arbor MI ; Vanderbilt University Medical Center, Nashville TN.
2 Arbor Research Collaborative for Health, Ann Arbor MI.
3 Center for Observational Research, Amgen, Inc., Thousand Oaks CA.
4 Center for Observational Research, Amgen, Inc., Thousand Oaks CA ; Department of Epidemiology, University of California, Los Angeles, Los Angeles CA.
5 Arbor Research Collaborative for Health, Ann Arbor MI ; University of Michigan, Ann Arbor MI.
6 Monash Medical Centre and Monash University, Clayton Australia.