Utuk NM, Ekanem A, Abasiattai AM. Timing and reasons for antenatal care booking among women in a tertiary health care center in Southern Nigeria. Int J Reprod Contracept Obstet Gynecol [Internet]. 2017 Aug. 28 [cited 2025 Oct. 2];6(9):3731-6. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/3225