1. School of Nursing, University of California, Los Angeles.
2. School of Medicine, University of California, Los Angeles.
3. Behavioral Sciences Department, The Rand Corporation, Santa Monica, California.
4. School of Medicine and School of Public Health, University of California, Los Angeles; The Rand Corporation, Santa Monica, California.
5. College of Nursing, University of Utah, Salt Lake City, Utah
6. College of Nursing, The University of Iowa, Iowa City, Iowa
7. College of Human Development, The Pennsylvania State University, University Park, Pennsylvania