Mitochondrial lineage M1 traces an early human backflow to Africa
BMC Genomics (2007) - Comment
pubmed: 17620140  doi: 10.1186/1471-2164-8-223  issn: 1471-2164 

Ana M González, José M Larruga, Khaled K Abu-Amero, Yufei Shi, José Pestano, Vicente M Cabrera