The board of directors of any corporation organized under this article shall consist of at least seven members, all of whom shall be residents of the State of West Virginia, a majority of whom shall be subscribers to its services, one of whom shall be a person licensed to practice medicine under the laws of the State of West Virginia, one of whom shall be a person connected with the healing arts, and one of whom shall be a member of the general public not connected with any contracting party. The members of the board shall serve without compensation but may be reimbursed for expenses incurred in carrying out their duties as members of the board.