Subject recruitment and retention for longitudinal research: practical considerations for a nonintervention model.
Streissguth
A P
AP
Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle 98195.
Guinta
C T
CT
D005260:Female; D006801:Humans; D008962:Models, Theoretical; D011247:Pregnancy; D011248:Pregnancy Complications / Q000139:chemically induced*; D012107:Research Design; D019966:Substance-Related Disorders / Q000150:complications*