- Pediatrics (3)
- Child Development (2)
- Child Welfare (2)
- Environment (2)
- Growth (2)
- Birth Rate--Japan--statistics (1)
- Child Health Services (1)
- Child Welfare--Japan (1)
- Infant Mortality--Japan--statistics (1)
- Infant, Newborn, Diseases (1)
- Mass Screening--Japan (1)
- Maternal Health Services (1)
- Maternal Health Services--Japan (1)
- Maternal Mortality--Japan--statistics (1)
- Obstetrics--Japan--Statistics (1)
- Pregnancy Complications (1)
- Pregnancy, Multiple (1)
- Pregnancy, Unwanted (1)
- 図書館--逐次刊行物 (1)