Chatwadee Pattarasiriwong และ Densak Pongrojpaw; Athita Chanthasenanont; Supapen Lertwutwiwat; Kornkarn Bhamarapravatana; Komsun Suwannarurk. (2018) Acetaminophen/tramadol Rectal Suppository for the Relief of Perineal Pain after Normal Vaginal Delivery: A randomized controlled trial. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>26</i>(3), 182-189.Chatwadee Pattarasiriwong และ Densak Pongrojpaw; Athita Chanthasenanont; Supapen Lertwutwiwat; Kornkarn Bhamarapravatana; Komsun Suwannarurk. "Acetaminophen/tramadol Rectal Suppository for the Relief of Perineal Pain after Normal Vaginal Delivery: A randomized controlled trial". Thai Journal of Obstetrics and Gynaecology 26 (2018):182-189.Chatwadee Pattarasiriwong และ Densak Pongrojpaw; Athita Chanthasenanont; Supapen Lertwutwiwat; Kornkarn Bhamarapravatana; Komsun Suwannarurk. Acetaminophen/tramadol Rectal Suppository for the Relief of Perineal Pain after Normal Vaginal Delivery: A randomized controlled trial. PIMDEE Co. Ltd.:ม.ป.ท. 2018.