Mapaisankit, N.; Chandeying, P.; Tangthasana, S. 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 J Obstet Gynaecol 2021, 29, 82-91.