Yudianta Medio Natamana Simbolon,SH M Hum Simbolon & Partners Law Firm Yudianta Medio Natamana Simbolon,SH M Hum Simbolon & Partners Law Firm Menara Bidakara I, Lt. 2, JI. Jend. Gatot Subroto Kav. 71-73, Jakarta Selatan 12780, Indonesia