Stein Gold, L., M. Gooderham, K. Papp, L. Ferris, M. Lebwohl, D. Adam, J. . Alonso-Llamazares, C.- ho Hong, S. Kempers, L. . Kircik, W. Jing Loo, D. Stewart, W. Nahm, M. Zirwas, P. Burnett, R. Higham, L. Navale, and D. Berk. “Long-Term Safety and Efficacy of Roflumilast Cream 0.3% in Adult Patients With Chronic Plaque Psoriasis: Results From a 52-Week, Phase 2b Open-Label Study”. SKIN The Journal of Cutaneous Medicine, vol. 5, no. 6, Nov. 2021, p. s44, doi:10.25251/skin.5.supp.44.