Pattarasiriwong C, Pongrojpaw D, Chanthasenanont A, Lertwutwiwat S, Bhamarapravatana K, Suwannarurk K. Acetaminophen / Tramadol Rectal Suppository for the Relief of Perineal Pain after Normal Vaginal Delivery: A randomized controlled trial. Thai J Obstet Gynaecol [internet]. 2018 Sep. 30 [cited 2026 Sep. 28];26(3):182-9. available from: https://he02.tci-thaijo.org/index.php/tjog/article/view/97514