 And more radical health analysts coined the term "health empires" to refer to the increasing power of these large teaching institutions that linked hospital care with medical education, putting one in the service of the other, arguably losing the patient-centered focus in the process.It was not surprising, then, that patient advocacy, like patient care, focused on the hospital stay, while health advocacy took a more critical perspective of a health care system in which power was concentrated on the top in large medical teaching centers and a dominance of the medical profession.The field of health advocacy also has deeper roots in the voluntary organization sector of society, where the early health advocates were more typically advocating for a cause, not for an individual.