Postoperative patient controlled analgesia in elderly Koreans: epidural versus intravenous administration.
Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea.
Shin-Hyung
SH
Kim
Yang-Sik
YS
Shin
Young-Jun
YJ
Oh
In-Hye
IH
Park
Yong-Seon
YS
Choi