By Haller U.   Wyss P.   Schilling J.   Gutzwiller F.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|76|1|75-79

Elsevier‎(1998)‎

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By Wietlisbach V.   Paccaud F.   Rickenbach M.   Gutzwiller F.   in Preventive Medicine

ISSN:0091-7435|26|4|523-533

Academic Press‎(1997)‎

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