The medical board shall be chosen from the medical advisory panel, composed of medical experts appointed by the Governor who shall be chosen from a list submitted by the executive committee of the South Carolina Medical Association, which list shall be approved by the Workers’ Compensation Commission. The medical advisory panel shall include at least three doctors of medicine with no less than five years’ specialization in the field of X-ray diagnosis and treatment, at least three doctors of medicine with no less than five years’ specialization in pathology, at least three doctors of medicine with no less than five years’ experience in the treatment and diagnosis of occupational diseases or who are specially qualified by training and experience as experts in the diagnosis and treatment of diseases in general and two doctors who are qualified for the treatment of pulmonary diseases. Members of the medical advisory panel shall serve for a term of two years and the Governor may from time to time fill vacancies in the membership thereof from its lists submitted to him as provided in this section.