<unk>  (from Greek kardiā, "heart" and -logia, "study") is a branch of medicine that deals with the disorders of the heart as well as some parts of the<unk> vascular system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. Physicians who specialize in this field of medicine are called<unk> sts, a specialty of internal medicine. Pediatric<unk> sts are pediatricians who specialize in<unk> . Physicians who specialize in<unk> c surgery are called<unk> thoracic surgeons or<unk> c surgeons, a specialty of general surgery.
Cardiology
Hematology
Neurology
Hepatology
Neonatology
Endocrinology
Pulmonology
Neurocardiology