[1] UNIV GIESSEN,ZENTRUM FRAUENHEILKUNDE & GEBURTSHILFE,D-6300 GIESSEN,FED REP GER
[2] UNIV MUNSTER,INST HUMANGENET,D-4400 MUNSTER,FED REP GER
[3] UNIV MUNSTER,ZENTRUM FRAUENHEILKUNDE,D-4400 MUNSTER,FED REP GER
[4] ALBERT SCHWEITZER KRANKENHAUS,D-3410 NORTHEIM,FED REP GER