Autor: Norman A. Constantine

Marc T. Braverman is a Cooperative Extension youth development specialist in the Department of Human and Community Development at the University of California, Davis. Norman A. Constantine is a senior research scientist and program director of the Center for Research on Adolescent Health and Development at the Public Health Institute in Oakland, California, and lecturer in epidemiology at the University of California, Berkeley. Jana Kay Slater is senior research scientist at the Center for Research on Adolescent Health and Development at the Public Health Institute in Oakland, California.