35 Business administration, organization and management services for physicians, hospitals, and other individuals or entities providing care to cancer patients; accounting services for physicians, hospitals, and other individuals or entities providing care to cancer patients; billing services for physicians, hospitals, and other individuals or entities providing care to cancer patients; advertising, marketing, and promotional services for physicians, hospitals, and other individuals or entities providing care to cancer patients; personnel placement and recruiting services in the health care field, namely, providing doctors and medical staff to physicians, hospitals, and other individuals or entities providing care to cancer patients