โสภาจารีย์ ช. and สิงห์คำ อ. (2018) “Factors predicting delaying in preterm birth among women who received tocolysis”, Journal of Thailand Nursing and Midwifery Council , 33(2), pp. 47–58. available at: https://he02.tci-thaijo.org/index.php/TJONC/article/view/125670 (accessed: 18 September 2026).