[OBJECTIVE ASSESSMENT OF POSTOPERATIVE PAIN AFTER DIGESTIVE TRACT SURGERY].

Masaki Kaibori, Hiroya Iida, Kosuke Matsui, Morihiko Ishizaki, Hideyuki Matsushima, Tatsuma Sakaguchi, Junichi Fukui, Kentaro Inoue

Pain is a sensation associated with subjective factors, making it difficult to measure and assess. Currently, there is no widely accepted method of objective...