Re: 'the unique COVID-19 presentation of patients with B cell depletion' by Belkin et al

Affiliations

• ¹ Infectious Diseases Unit, Internal Medicine Department. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain; Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Majadahonda, Madrid, Spain. Electronic address: elmuru@gmail.com.
• ² Infectious Diseases Unit, Internal Medicine Department. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain; Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Majadahonda, Madrid, Spain.
• ³ Emergency Department, Hospital Universitario Cabueñes, Gijón, Asturias, Spain.
• ⁴ Infectious Diseases Unit, Internal Medicine Department. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, Spain; Instituto de Investigación Sanitaria Puerta de Hierro-Segovia de Arana, Majadahonda, Madrid, Spain; Medicine Department, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain.