Trotter, A Effects of postnatal estradiol and progesterone replacement in extremely preterm infants. [electronic resource] - The Journal of clinical endocrinology and metabolism Dec 1999 - 4531-5 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0021-972X Standard No.: 10.1210/jcem.84.12.6180 doi Subjects--Topical Terms: Birth WeightBone DensityEstradiol--administration & dosageFemaleFollicle Stimulating Hormone--bloodGestational AgeHormone Replacement TherapyHumansInfant, NewbornInfant, PrematureInfusions, IntravenousLuteinizing Hormone--bloodProgesterone--administration & dosageWeight Gain