Co-Authors Barina, Yulia Fero, David Friska, Maria Girsang, Mei Lyna HARAHAP, NURUL HUSNAH Lase, Sudirman Lumbantobing, Panni Ance Lumbantobing, Panniance Manik, Sonia Shindy A. Nadeak, Tio R J Nadeak, Tio R.J Nainggolan, Maria Friska Rajagukguk, Denata Saragih, Herlina Silalahi, Wolter Parlindungan Simamora, Eska Romauli Simarmata, Ratna Simbolon, Jupalman Welly Simbolon, Rusmauli Sitepu, Yulia K.S Sitio, Robert J.T Sitio Sitio, Robert J.T. Smj, Williem Kennedy Tampubolon, Triani Mawita Tobing, Panni Ance Lumban Wahyuni, Nurul Sari