By Berg C.J.   in Maternal and Child Health Journal

ISSN:1092-7875|5|2|75-84

Springer Publishing Company ‎(2001)‎

Access to resources Favorite 15.862816

By Callaghan W.M.   Berg C.J.   in Obstetrics and Gynecology

ISSN:0029-7844|102|5|1015-1021

Elsevier‎(2003)‎

Access to resources Favorite 11.287055

By Whitehead S.J.   Berg C.J.   Chang J.   in Obstetrics and Gynecology

ISSN:0029-7844|102|6|1326-1331

Elsevier‎(2003)‎

Access to resources Favorite 9.304203