A neurosurgeon, an orthopaedist, a plastic surgeon and an ophthalmologist visited the patient after a surgery. Times are: Neurosurgeon 7{:45, Orthopaedist 8{:}30, Plastic surgeon 9{:}15, Ophthalmologist 9{:}50 (each may be A.M. or P.M.). Who were the doctors to visit the patient in the evening?}