37 Installation, maintenance and repair of medical equipment, veterinary equipment, x-ray equipment, x-ray film processing equipment, [ electrocardiographs, digital electrosurgical units, therapeutic lasers, and anesthesia machines; ] Technical support services, namely, technical advice related to the repair of medical equipment, veterinary equipment, x-ray equipment, x-ray film processing equipment [ electrocardiographs, digital electrosurgical units, therapeutic lasers, and anesthesia machines ]