High vitamin A intake in early pregnancy and major malformations: A multicenter prospective controlled study

P. Mastroiacovo, T. Mazzone, A. Addis, E. Elephant, P. Carlier, T. Vial, H. Garbis, E. Robert, M. Bonati, A. Ornoy, A. Finardi, C. Schaffer, L. Caramelli, E. Rodríguez-Pinilla, M. Clementi