recommendation of the district health officer, when approved by the Director of Health, fix the salaries of the presidents of  sanitary divisions and other sanitary employees of the province. The salaries of presidents of sanitary divisions shall not be less than one thousand two hundred pesos per annum nor more than three thousand six hundred pesos per annum. [2166-7.] SECTION  830 . Travel Expenses. —  The travel expenses of presidents of sanitary divisions and other sanitary employees on official business shall be regulated by the district health officer of the province with the approval of the provincial board. [2156-7.] Whenever in the course of official service any president of a sanitary division travels to visit or attend any pay client or patient, he shall not be entitled to reimbursement for travel expenses incurred in this latter regard and shall state in a sworn vo ucher to accompany his claim for reimbursement that the claim does not include any such expense. [2156-6.] In case of illness, or authorized absence the president of a sanitary division may, with the approval of the district health officer, arrange with the president of another sanitary division to act in his stead, such service to be without additional salary;  in such cases the president so acting shall recover the travel expenses and per diems to which the regular incumbent of the position is entitled. In the event of any officer refusing to render such service the district health officer shall designate for d uty such president as he deems fit. [2156-9.] SECTION  831 . Leaves of Absence — Provision for Acting President. — Leaves of absence upon occasion of illness or for other cause shall be allowed under such conditions as the provincial authorities and the district health officer may approve, but during an  epidemic no leave shall be granted without the approval of the Director of Health. [2156-9.] ARTICLE  IX Sanitary President in Community Possessing No Health Organization 254 Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011