Authors: O'Connor, AE McFarlane, JR Hayward, S Yohkaichiya, T Groome, NP de Kretser, DM

Citation: Ae. O'Connor et al., Serum activin A and follistatin concentrations during human pregnancy: a cross-sectional and longitudinal study, HUM REPR, 14(3), 1999, pp. 827-832