Safety and efficacy of a combination of pethidine and levallorphan for pain relief during labor: An observational study

Journal of Obstetrics and Gynaecology Research, EarlyView.

Source: Journal of Obstetrics and Gynaecology Research - October 26, 2018 Category: OBGYN Authors: Masato Kinugasa, Mayu Miyake, Hanako Tamai, Maki Tamura Source Type: research