In particular , it is found among speakers of Austronesian languages , and it is rare even in Southeast Asia among members of other language families .
It is nearly absent from mainland East Asia , where its sister group M9a ( also found in Japan ) is common .
It is found among speakers of Austronesian languages , and it is rare even in Southeast Asia among members of other language families .
It is nearly absent from mainland East Asia , where its sister group M9a ( also found in Japan ) is common .