Phumdoung, Sasitorn, Boonrueing Manasurakarn, Kitti Rattanasombat, Sukit Mahattanan, Kalaya Maneechot, Benjamach Chanudom, and Somboon Kaewnak. “Effect of the Prince of Songkla University Birthing Bed on Duration, Pain, and Comfort Level During Second-Stage Labor in Primiparous Thais”. Pacific Rim International Journal of Nursing Research 17, no. 1 (February 26, 2013): 56–67. Accessed April 26, 2024. https://he02.tci-thaijo.org/index.php/PRIJNR/article/view/6364.