Italian Medical Professionals' Practices, Attitudes, and Knowledge in Travel Medicine: Protocol for a National Survey - Francesco Baglivo; Luigi De Angelis; Federico Vannini; Antonello Agostini; Antonio Todaro; Eleonora Torri; Giulio Alberto Gianolio Lopez; Margherita Fui; Alberto Tomasi; Caterina Rizzo (JMIR Research Protocols)