A doctor at a public hospital was found to have kept hundreds of nude photos of male patients on his phone, after being arrested for allegedly taking pictures of a male nurse in the shower, a police source said on Wednesday.Investigators found hundreds of the images of patients from Caritas Medical Centre in Cheung Sha Wan, where the 25-year-old previously worked, according to the source. At least two patients, both in their 20s, were identified.The doctor, who trained at the University of Hong…