This industry comprises establishments of independent health practitioners (except physicians; dentists; chiropractors; optometrists; mental health specialists; physical, occupational, and speech therapists; and audiologists). These practitioners operate private or group practices in their own offices (e.g., centers, clinics) or in the facilities of others, such as hospitals or HMO medical centers. Illustrative Examples: Acupuncturists' (except MDs or DOs) offices Inhalation or respiratory therapists' offices Dental hygienists' offices Midwives' offices Denturists' offices Naturopaths' offices Dietitians' offices Podiatrists' offices Homeopaths' offices Registered or licensed practical nurses' offices Establishments primarily engaged in--