Winitthana, Thanyarat, Sitthipong Thawinkarn, and Thumwadee Tangsiriwatthana. 2015. “Subphrenic Saline Irrigation for Reducing Postoperative Shoulder Pain after Gynecologic Laparoscopic Surgery: A randomized controlled trial”. Thai Journal of Obstetrics and Gynaecology 23 (3). Bangkok, Thailand:183-89. https://doi.org/10.14456/tjog.2015.28.