Class 041: Undergraduate university and professional graduate and postgraduate medical and dental educational services; allied health profession medical educational services, namely, conducting courses and classes and seminars in the fields of nursing, radiology respiratory technology, physical therapy, recreational therapy, and spiritual care; educational services, namely conducting residency programs in the fields of anesthesiology, emergency medicine, community and family medicine, internal medicine, medicine/pediatrics, obstetrics/gynecology, orthopedics, oral surgery, opthalmology, pathology, radiology, surgery and psychiatry; educational services, namely, conducting fellowship programs in the fields of geriatrics, cardiology, gastroenterology, hematology/oncology, infectious disease, pulmonary/critical care and sports medicine; medical educational services for the public, namely, conducting classes and seminars to the public in the fields of women's health, sexually transmitted diseases, HIV testing and counseling and chronic diseases; Class 042: Medical research services; Class 044: Health care services, hospital services, health care services, namely, HMO services, trauma center services, primary care services, acute care services, dental services, outpatient services, mental health clinic services, community-based medical clinic services, health care services, namely, government-supported health department services, and diagnosis and treatment of mental illnesses and disorders, treatment and rehabilitation of chemical dependency and addiction