title: Discussion: measurement issues in the study of effects of substance abuse in pregnancy.
authors.affiliation: Human Genetics Laboratory, Georgia Mental Health Institute, Atlanta 30306.
authors.forename: C D
authors.initials: CD
authors.lastname: Coles
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000139:chemically induced*; D012107:Research Design; D019966:Substance-Related Disorders / Q000150:complications*