A case of recurrent fixed drug eruption following the administration of 2 different coronavirus disease 2019 vaccines verified using intradermal and patch tests - Jung Eun Seol, MD, PhD; Sang Woo Ahn, MD; Seung Hee Jang, MD; Seong Min Hong, MD; Mi Yeong Kim, MD, PhD; Hyojin Kim, MD, PhD (JAAD Case Reports, 2023)