Luigi Matera MD1, Raffaella Nenna MD PhD 1, Antonella Frassanito MD PhD1, Laura Petrarca MD1, Enrica Mancino MD1, Valentina Rizzo MD1, Greta Di Mattia MD1, Domenico Paolo La Regina MD1, Alessandra Pierangeli MD PHD2 and Fabio Midulla MD PHD1 Low lymphocyte count: a clinical severity marker in infants with bronchiolitis. 2022.