Sara Pischedda et al. (2017) stated that modern Vietnamese have a major component of their ethnic origin coming from the now-called southern China region and a minor component from a Thai-Indonesian composite. The study said that admixture analysis indicates that Vietnamese Kinh have a major part which is most common in Chinese and two minor parts which have the highest prevalence in the Bidayuh of Malaysia and the Proto-Malay. The study said that multidimensional scaling analysis indicates that Vietnamese Kinh have a closeness to Malay people, Thai and Chinese, and the study said that Malays and Thai are the samples which could be admixed with Chinese in the Vietnamese gene pool. The study said that Vietnamese mtDNA genetic variation matches well with the pattern seen in Southeast Asia, and the study said that most Vietnamese people had mtDNA haplotypes that clustered in clades M7 (20%) and R9’F (27%) which are clades that also dominate maternal lineages in Southeast Asia more generally.