[1] Chulalongkorn Univ, Fac Nursing, Bangkok, Thailand
[2] Univ Airlangga, Fac Dent Med, Dept Oral Biol, Dent Pharmacol, Jl Prof Dr Moestopo 47, Surabaya 60132, Indonesia
[3] Univ Putra Malaysia, Fac Med & Hlth Sci, Dept Pathol, Immunol Unit, Serdang 43400, Selangor, Malaysia
[4] Univ Airlangga, Fac Dent Med, Dept Oral Biol, Surabaya 60132, Indonesia