[Insulin secretion in newborn infants. 1. Proper positioning of the tip of the umbilical vein catheter for the collection of the blood sample at the portal vein in newborn infants].
D002404:Catheterization; D006801:Humans; D007231:Infant, Newborn; D007328:Insulin / Q000097:blood* / Q000378:metabolism; D000078790:Insulin Secretion; D008722:Methods; D011169:Portal Vein; D014471:Umbilical Veins
D007328:Insulin