[Different or 'customary'? The vertical labor position].
D000328:Adult; D036861:Delivery, Obstetric; D005260:Female; D006700:Home Childbirth; D006801:Humans; D007743:Labor, Obstetric; D008297:Male; D011187:Posture; D011247:Pregnancy
Anders of 'gewoon'? De verticale barenshouding.