1. Economic evaluation of antibiotic usage for cesarean section in PKU Muhammadiyah Yogyakarta Hospital 2. Evaluation of inhibitory effect of Green Tea effervescent tablet on linoleic acid oxidation 3. The influence of vitamin B1 and zinc sulphate to the polysaccharide production of shiitake mushroom (Lentinus edodes) and the immunomodulatory test on lymphocyte cells of Balb/c mice 4. Effec…