Wongwiwatthananukit, Supakit, Rawadee Dhumma-Upakorn, and Ketkanok Kaenboon. “Effectiveness of Oral Maintenance Terbutaline Therapy after Threatened Preterm Labor”. Journal of Health Research 23, no. 1 (November 20, 2018): 37–42. accessed September 29, 2026. https://he01.tci-thaijo.org/index.php/jhealthres/article/view/156331.