by Eriksson, KjerstinM, Haug, Kjell, Salvesen, KjellÅ., Nesheim, Britt-Ingjerd, Nylander, Gro, Rasmussen, Svein, Andersen, Karen, Nakling, JakobO, Eik-Nes, SturlaH
Published in Acta obstetricia et gynecologica Scandinavica (1998)