Comparison of qPCR and chromogenic culture methods for rapid detection of group B streptococcus colonization in Vietnamese pregnant women oleh Manh-Tuan Ha, Huyen Tran-Thi-Bich, Thao Bui-Thi-Kim, My-Linh Nguyen-Thi, Thanh Vu-Tri, Thuy-Duong Ho-Huynh, Tuan-Anh Nguyen