Comparing methods to assess dietary sodium intake in pregnancy.
D003404:Creatinine / Q000652:urine; D004032:Diet; D004435:Eating; D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D012964:Sodium / Q000008:administration & dosage* / Q000652:urine
D012964:Sodium; D003404:Creatinine