Section 6
SEC. 6. Term of Office of Board Members.-The chairman and members of the Board shall hold office for a term of three years and until their successors shall have been appointed and qualified: Provided, That of the first Board, two members, a physical therapist and an occupational therapist, shall hold office for a term of two years and. the other two members belonging to the same two professions shall hold office for a term of three years. Any vacancy in the Board for any cause other than the expiration of the term shall be filled by appointment until the expiration of the term of the member to be replaced.