1 Administration on Children, Youth and Families (ACYF), Box 1182-Children's Bureau, Washington, DC 20013. Phone, 202/205-8172; fax, 202/401-5917; e-mail, PMAZA@ACF.DHHS.GOV National Institute on Child Health and Human Development (NICHD), 6100 Executive Blvd., Room 4B03G, Rockville, MD 20852. Phone, 301/496-5575; fax, 301/496-3790; e-mail, LWRIGHT@hd01.nichd.nih.gov University of Miami School of Medicine, Jackson Memorial Hospital, Department of Pediatrics, Maternal Lifestyles Study, Dominion Towers, Room 813, 1400 NW 10th Avenue, Miami, FL. 33136. Phone, 303/243-4841; fax, 305/243-6032; e-mail, CBAUER@peds.med.miami.edu Wayne State University School of Medicine, Children's Hospital of Michigan, Division of Neonatal and Perinatal Medicine, 3901 Beaubian Boulevard, Room 401, Detroit, MI 48201. Phone, 313/745-1436; fax, 313/745-5867; e-mail, SSHANKA@cms.cc.wayne.edu University of Tennessee School of Medicine, E.H. Crump Hospital, New Born Center 853 Jefferson Avenue, Room 201, Memphis, TN 38163. Phone, 901/448-5950; fax, 901/448-1691; e-mail, HBADA@utmem1.utmem.edu Brown University, Women's and Infants Hospital, Department of Pediatrics, 101 Dudley Street, Providence, RI 02905. Phone, 401/453-7640/41; fax, 401/453-7646; e-mail, BARRY_LESTER@brown.eduGeorge Washington University Biostatistics Center, 6110 Executive Blvd., Suite 750, Rockville, MD 20852. Phone, 301/881-9260; fax, 301/816-0385 National Institute on Drug Abuse (NIDA), Clinical Medicine Branch, 5600 Fishers Lane, Room 10A-08, Rockville, MD 20857. Phone, 301/443-1801 9; fax, 301/594-6566; e-mail, VS240@nih.gov George Washington University Biostatistics Center, 6110 Executive Blvd., Suite 750, Rockville, MD 20852. Phone, 301/881-9260; fax, 301/816-0385; e-mail, BowlerA@hd01.nichd.gov George Washington University Biostatistics Center, 6110 Executive Blvd., Suite 750, Rockville, MD 20852. Phone, 301/881-9260; fax, 301/816-0385; e-mail, KATSIKIO@biostat.bsc.gwu.edu.