Hospitals that have neurologists and neurosurgeons tend to house clinical neurophysiology departments. Neurologists, neurosurgeons, and physiatrists are physicians specialising in treating brain injury. Experts may include professionals such as psychotherapists, psychiatrists, neurologists, pediatricians, medical personnel, and tutors. Pain physicians are often fellowship-trained board-certified anesthesiologists, neurologists, physiatrists or psychiatrists. Consciousness is of concern to patients and physicians, especially neurologists and anesthesiologists. Chandy was the first of the first generation of neurologists, neurosurgeons and neuroscientists. The Bouthillier nomenclature remains in widespread use by neurosurgeons, neuroradiologists and neurologists. Some psychiatrists are also in the list of neurologists and the list of neuroscientists. Thus its diagnostic utility has been questioned by neurologists and neuropsychologists alike. They research using information given to them by other neurologists and/ or physicians. Diagnosis is made by neurologists who carefully rule out alternative diagnoses. Some neurologists receive additional subspecialty training focusing on a particular area of the fields. In some places there was no access at all to consultant neurologists or nurses. Localization of the pathology is the key process by which neurologists develop their differential diagnosis. Conklin's fasting therapy was adopted by neurologists in mainstream practice.