Gelfand, J. M., Armstrong, A. W., Bell, S., Anesi, G. L., Blauvelt, A., Calabrese, C., . . . Ritchlin, C. T. (2021). National Psoriasis Foundation COVID-19 Task Force guidance for management of psoriatic disease during the pandemic: Version 2—Advances in psoriatic disease management, COVID-19 vaccines, and COVID-19 treatments. Journal of the American Academy of Dermatology, 84(5), 1254-1268. https://doi.org/10.1016/j.jaad.2020.12.058

Gelfand, Joel M., et al. "National Psoriasis Foundation COVID-19 Task Force Guidance for Management of Psoriatic Disease During the Pandemic: Version 2—Advances in Psoriatic Disease Management, COVID-19 Vaccines, and COVID-19 Treatments." Journal of the American Academy of Dermatology 84, no. 5 (2021): 1254-1268. https://doi.org/10.1016/j.jaad.2020.12.058.

Gelfand, Joel M., et al. "National Psoriasis Foundation COVID-19 Task Force Guidance for Management of Psoriatic Disease During the Pandemic: Version 2—Advances in Psoriatic Disease Management, COVID-19 Vaccines, and COVID-19 Treatments." Journal of the American Academy of Dermatology, vol. 84, no. 5, 2021, pp. 1254-1268, https://doi.org/10.1016/j.jaad.2020.12.058.