- Subjects will not be included in the trial if they have a diagnosed medical condition or significant physical or learning disability, postpartum or other form of psychosis, or are currently under psychiatric care. Mothers of children with any serious medical or psychiatric illness will also be excluded. The age range of mothers for inclusion in the study will be 16 to 40 years, and all subjects should intend to stay in the study area for at least another 6 months.