Kerdtawee, Pakapong, Piyawadee Wuttikonsammakit, and Parinya Chamnan. 2019. “Efficacy of Intravenous Sedation, Paracervical Block and Paracervical Block with Lidocaine Spray on Pain Relief during Uterine Curettage in First Trimester Incomplete Abortion: Randomized clinical trial”. Thai Journal of Obstetrics and Gynaecology 27 (3). Bangkok, Thailand:139-48. https://doi.org/10.14456/tjog.2019.18.