sentences:  Subsequently, after Melazzini's statement, hundreds of patients (among them notable cases in medical ethics such as Nello Guerra Crescenzi, Enrico Canova, and Salvatore Crisafulli — who was famous for having come out of a 2-year coma) wrote letters to Welby asking him to ""fight for his life"".Oncologist and long-time euthanasia supporter Umberto Veronesi and surgeon Ignazio Marino said Welby's right to refuse medical treatment was granted by Italian constitution and by the code of conduct of the Italian medical association.One of Welby's doctors noted that after switching off the ventilator, the code of conduct would force him to take proper action to revive the patient once he reached a state of unconsciousness.