(supersedes previous)Varese, November 29 - A total of 14 people are under investigation in five suspicious deaths - four of them at Saronno city hospital - that led to the arrests earlier today of physician Leonardo Cazzaniga and his lover, nurse Laura Taroni. The rest of the suspects are almost all hospital staff, sources said. Carabinieri police also searched hospital management premises. Cazzaniga, 60, who is also described as an anesthetist, was arrested in the deaths of four patients as well as his lover's husband. "In treating terminally ill patients, (Cazzaniga) referred to a 'protocol' all his own," prosecutors said. The investigation was sparked when a nurse turned to authorities.