[1] Univ Airlangga, Dr Soetomo Teaching Hosp, Dept Dermatol & Venereol, Fac Med, Prof Dr Moestopo St 47, Surabaya 60131, Indonesia
[2] Univ Muhammadiyah Sumatera Utara, Fac Med, Sumatera Utara, Indonesia
[3] Univ Airlangga, Inst Trop Dis, Stem Cell Lab, Surabaya, Indonesia
[4] Univ Airlangga, Dept Microbiol, Fac Vet Med, Virol & Immunol Lab, Surabaya, Indonesia