Table 1 An outline of questions in the questionnaire
Age at the investigation |
Age of menarche |
Menstrual cycle |
Delivery |
Lactation |
Anamnesis |
Place of residence (village/town/city) |
Occupation |
Muscular labor |
Habit of exercise |
Smoking |
Origin of rice |
Habit of food intake |
Diet |
Intake of well water |
Amount of rice intake |