Analisis Ekspresi mRNA dan Metilasi DNA Promoter Gen TNF-?, Sitokin CXCL16 dan P53 pada Darah Menstruasi Penderita Endometriosis dengan Nyeri dan Nir-Endometriosis = Analysis of mRNA Expression and Promoter DNA Methylation of TNF-α, CXCL16 and P53 Genes in Menstrual Blood of Endometriosis Patients with Pain and Non-Endometriosis