Atrial natriuretic factor in pregnancy and pregnancy-induced hypertension' ALBERT FOURNIER,~ 1. ~REGCSHWE, s\r. EL ESPER, J. D. EALAU, p. P. WESTEEL, W. MAKDASSI, AND PIEVET Centre Hospitalier Regional et Universitaire D 'Arniens, Hopital Sud Avenue Rene hennec-Salsuel, B. P. 3089 80030 Amiens CDEX, France