M. Techasomboon, R. Wattanayingcharoenchai, J. M. Bartlett, and K. Aimjirakul, “Efficacy of Topical Ethyl Chloride Spray versus Subcutaneous 1% Lidocaine Injection in Reducing Pain from One Rod System Implant Insertion”, Thai J Obstet Gynaecol, vol. 25, no. 4, pp. 266–274, Dec. 2017.