Nutrition and diet in pregnancy.
D002136:Calcium, Dietary; D004032:Diet; D005260:Female; D006801:Humans; D007501:Iron; D009747:Nutritional Physiological Phenomena; D005082:Physical Exertion; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control
D002136:Calcium, Dietary; D007501:Iron