When the deed of gift, devise, or bequest mentioned in section 749.20 of the Revised Code requires the investment, or the change of investment, of the principal of such property or funds, or any part thereof, to be made upon the approval of an advisory committee appointed by the court, such property or funds, and any hospital property for the care or management of which, in whole or in part, such fund is used, shall be managed, controlled, and administered by a board of hospital trustees.
R.C. §749.21