{Reference Type}: Letter {Title}: A preliminary observation: Male pattern hair loss among hospitalized COVID-19 patients in Spain - A potential clue to the role of androgens in COVID-19 severity. {Author}: Goren A;Vaño-Galván S;Wambier CG;McCoy J;Gomez-Zubiaur A;Moreno-Arrones OM;Shapiro J;Sinclair RD;Gold MH;Kovacevic M;Mesinkovska NA;Goldust M;Washenik K; {Journal}: J Cosmet Dermatol {Volume}: 19 {Issue}: 7 {Year}: Jul 2020 {Factor}: 2.189 {DOI}: 10.1111/jocd.13443 {Abstract}: A preliminary observation of high frequency of male pattern hair loss among admitted COVID-19 patients and suggest that androgen expression might be a clue to COVID-19 severity.