{Reference Type}: Letter {Title}: Methotrexate in the treatment of immune checkpoint blocker-induced bullous pemphigoid. {Author}: Shi CR;Otto TS;Thompson LL;Chang MS;Reynolds KL;Chen ST; {Journal}: Eur J Cancer {Volume}: 159 {Issue}: 0 {Year}: Dec 2021 {Factor}: 10.002 {DOI}: 10.1016/j.ejca.2021.09.032 {Abstract}: