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O231 The effects of air sac combined with nitrous oxide and Doula companying delivery in vaginal delivery
Author(s) -
Dong X.,
Qi H.,
Hu L.,
Luo X.,
Zhu Y.,
Cai J.
Publication year - 2009
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/s0020-7292(09)60603-2
Subject(s) - citation , vaginal delivery , nitrous oxide , library science , medicine , gynecology , computer science , biology , anesthesia , pregnancy , genetics