Chung-Mao KAO, et al. “The Occurrence of Varicella After Zoster Vaccination in a Patient With Rheumatoid Arthritis Receiving Tofacitinib”. Archives of Rheumatology, vol. 36, no. 2, June 2021, pp. 305-7, doi:10.46497/ArchRheumatol.2021.8212.