Mapaisankit, N., Chandeying, P. and Tangthasana, S. (2021) “Efficacy of Ethyl Chloride Spray versus Subcutaneous 1% Lidocaine Injection for Relieving the Pain of One-rod Contraceptive Implant Removal: A single-blinded randomized controlled trial”, Thai Journal of Obstetrics and Gynaecology. Bangkok, Thailand, 29(2), pp. 82–91. doi: 10.14456/tjog.2021.11.