Buletin Penelitian Sistem Kesehatan (Bulletin of Health System Research) Vol. 16, No. 3, Juli 2013 : Perilaku Konsumsi Tembakau Pelajar SMP Usia 13-15 Tahun di Sumatera dan Jawa (Analisis Indonesia-Gyts 2009) (Behavior Tobacco Consumption of Junior High School Student Aged 13-15 Years In Sumatra and Java (Analysis of indonesia-Gyts 2009)