CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 739-742, doi:10.3760/j.issn:0529-567X.2005.11.007
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CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 721-722, doi:10.3760/j.issn:0529-567X.2005.11.001
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 791-792, doi:10.3760/j.issn:0529-567X.2005.11.023
CHINESE JOURNAL OF OBSTETRICS AND GYNECOLOGY, Volume 40, Issue 11,2005, Pages 775-776, doi:10.3760/j.issn:0529-567X.2005.11.015