205.170.  Board of trustees — tenure — vacancies. — 1.  The county commission shall appoint five trustees chosen from the citizens at large with reference to their fitness for such office, all residents of the county, not more than three of such trustees to be residents of the city, town or village in which the hospital is to be located, who shall constitute a board of trustees for such public hospital.

  2.  The trustees appointed pursuant to subsection 1 of this section shall hold their offices until the next following municipal election, when five hospital trustees shall be elected and hold their offices for the following terms, with each of the trustees' respective terms determined by lot:

  (1)  One trustee for a one-year term;

  (2)  One trustee for a two-year term;

  (3)  One trustee for a three-year term;

  (4)  One trustee for a four-year term; and

  (5)  One trustee for a five-year term.

  3.  For trustees elected prior to January 1, 1995:

  (1)  If the terms of two trustees expire at the time of the next election of trustees occurring after January 1, 1995, then:

  (a)  One trustee shall be elected for a four-year term; and

  (b)  One trustee shall be elected for a three-year term; and

  (2)  At the next following municipal election in which the terms of three trustees expire:

  (a)  One trustee shall be elected for a five-year term;

  (b)  One trustee shall be elected for a four-year term;

  (c)  One trustee shall be elected for a three-year term; or

  (3)  If the terms of three trustees expire at the time of the next election of trustees occurring after January 1, 1995, then:

  (a)  One trustee shall be elected for a five-year term;

  (b)  One trustee shall be elected for a four-year term;

  (c)  One trustee shall be elected for a three-year term; and

  (4)  At the next following municipal election in which the terms of two trustees expire:

  (a)  One trustee shall be elected for a five-year term; and

  (b)  One trustee shall be elected for a four-year term.

  4.  The terms of the trustees elected pursuant to subsection 3 of this section shall be determined by lot.

  5.  The office of a trustee elected pursuant to subsection 3 of this section whose term of office is about to expire shall be filled by the election of a hospital trustee who shall serve for a term of five years.  Each trustee subsequently elected shall serve a term of five years.

  6.  Any vacancy in the board of trustees occasioned by removal, resignation or otherwise shall be reported to the county commission and be filled in like manner as original appointments, the appointee to hold office until the next following municipal election, when such vacancy shall be filled by election of a trustee to serve during the remainder of the term of his predecessor.

  7.  No trustee shall have a personal pecuniary interest, either directly or indirectly, in the purchase of any supplies for such hospital, unless the same are purchased by competitive bidding.