1. Primatology Study Program; Bogor Agricultural University; Bogor Indonesia
2. Faculty of Veterinary Medicine; Department of Reproductive Clinic and Pathology; Bogor Agricultural University; Bogor Indonesia
3. Endocrinology Laboratory; German Primate Center; Leibniz Institute for Primate Research; Göttingen Germany
4. Primate Research Center; Bogor Agricultural University; Bogor Indonesia