Cold and COVID: recurrent pernio during the COVID-19 pandemic

Affiliations

• ¹ Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
• ² Mongan Institute, Massachusetts General Hospital, Boston, MA, USA.
• ³ University of Pennsylvania, Philadelphia, PA, USA.
• ⁴ The University of Texas Southwestern Medical Center, Dallas, TX, USA.
• ⁵ University of California San Francisco, San Francisco, CA, USA.
• ⁶ University Hospital, Munich University of Ludwig Maximilian, Munich, Germany.
• ⁷ University of Miami Miller School of Medicine, Miami, FL, USA.
• ⁸ Henry Ford Health System, Detroit, MI, USA.
• ⁹ St. Louis University, St. Louis, MO, USA.