1 Myocarditis Disease Unit, San Raffaele Scientific Institute, Milan, Italy; School of Medicine, Vita-Salute San Raffaele University, Milan, Italy. Electronic address: peretto.giovanni@hsr.it.
2 School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele, Milan, Italy.