Acanthosis nigricans in the setting of severe pulmonary disease exacerbated by COVID-19 infection - Kelsey E. Hirotsu, MD; Audris Chiang, MD; Eman Bahrani, MD; Jeffrey M. Cloutier, MD, PhD; Kerri E. Rieger, MD, PhD; Bernice Y. Kwong, MD; Maria Aleshin, MD (Elsevier, 2022)