Full text: Available Index: IMSEAR (South-East Asia) Main subject: Aged / Female / Humans / Male / Pregnancy / Child / Child, Preschool / Incidence / Cross-Sectional Studies / Adolescent Type of study: Incidence study / Observational study / Prevalence study / Prognostic study / Risk factors Country/Region as subject: Asia Language: English Year: 1995 Type: Article