Economic evaluation of antibiotic usage for cesarean section in PKU Muhammadiyah Yogyakarta Hospital - Andayani, Tri Murti; Faculty of Pharmacy, Universitas Gadjah Mada. Yogyakarta, Indonesia. (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2005)