Erten, Elif Emel, et al. “Should Elective Surgical Procedures Be Delayed in Pediatric Cases in Covid-19 Pandemic? Until When? Is Pcr Required in The Preoperative Period?”. Turkish Journal of Pediatric Disease, vol. 16, no. 3, May 2022, pp. 215-9, https://doi.org/10.12956/tchd.908015.