The medical specialty concerned with the function and disorders of the gastrointestinal tract, including stomach, intestines, and associated organs.

A surgical specialty that focuses on abdominal contents including esophagus, stomach, small bowel, colon, liver, pancreas, gallbladder and bile ducts, and often the thyroid gland (depending on local reference patterns).

A general term used to represent a variety of procedures that involve the orbit, eyelids, tear ducts, and the face. Ocular reconstructive surgery, aesthetic eyelid surgery, facial plastic surgery, and cosmetic procedures fall into this category.

The combined medical and surgical specialty concerned with the eye and its disorders. The practice of ophthalmology involves a mastery of ophthalmic optics, of the structure, function and diseases of the eyes, of the associated neurological systems concerned with vision, of the range of general conditions that affect the eyes and of the microsurgical skills and techniques used in the treatment of many ophthalmic conditions.

The medical specialty concerned with the preservation, restoration, and development of form and function of the musculoskeletal system, extremities, spine, and associated structures by medical, surgical, and physical methods.

Surgery concerned with the restoration, reconstruction, correction, or improvement in the shape and appearance of body structures that are defective, damaged, or misshapen by injury, disease, or anomalous growth and development.