Immunoreactive renin, prorenin, and enzymatically active renin in plasma during pregnancy and in women taking oral contraceptives. - Derkx,F.HM.; Stuenkel,C.; Schalekamp,M.PA.; Visser,W.; Huisveld,J.H.; Schalekamp,A.DH. (J Clin Endocrinol Metab, 1986)