1. Department of Biostatistics; Indiana University School of Medicine and Fairbanks School of Public Health; Indianapolis, Indiana U.S.A.
2. Regenstrief Institute, Inc.; Indianapolis, Indiana U.S.A.
3. Department of Biostatistics and Medical Informatics; University of Wisconsin; Madison, Wisconsin U.S.A.
4. Eli Lilly & Company; Indianapolis, Indiana U.S.A.