1 Department of Anesthesiology, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
2 Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
3 Department of Anesthesiology, Far Eastern Memorial Hospital, 21, Section 2, Nan-Ya South Rd., Banqiao District, New Taipei City, Taiwan 220. Electronic address: femh.vicechiefdoctor@gmail.com.