[1] Univ Muhammadiyah Yogyakarta, Fac Med & Hlth Sci, Dept Microbiol, Bantul, Indonesia
[2] Brawijaya Univ, Grad Sch, Dept Environm & Dev Studies, Malang, Indonesia
[3] Brawijaya Univ, Fac Math & Nat Sci, Dept Stat, Malang, Indonesia
[4] Brawijaya Univ, Fac Agr, Malang, Indonesia
[5] Brawijaya Univ, Fac Med, Malang, Indonesia