Development of multiplex methylation-specific PCR for detecting methylated/un-methylated PTEN promoter in breast cancer patients using a single closed tube oleh Primariadewi Rustamadji, Azamris, Nunung Ainur Rahmah, Elsa Septiani Putri, Rosita Wati, Nadya Shifani, Yeremiah Rubin Camin, Endry Nugroho Prasetyo, Kartini Eriani, Elvan Wiyarta, Desriani