Jin Han-jun et al. (1999) said that the mtDNA 9‐bp deletion frequencies in the "COII/tRNALys" region for Vietnamese (23.2%) and Indonesians (25.0%), which are the two populations constituting Southeast Asians in the study, are relatively high frequencies when compared to the 9-bp deletion frequencies for Mongolians (5.1%), Chinese (14.2%), Japanese (14.3%) and Koreans (15.5%), which are the four populations constituting East Asians in the study. The study said that these 9-bp deletion frequencies are consistent with earlier surveys which showed that 9-bp deletion frequencies increase going from Japan to mainland Asia to the Malay Peninsula, which is supported by the following studies: Horai et al. (1987); Hertzberg et al. (1989); Stoneking & Wilson (1989); Horai (1991); Ballinger et al. (1992); Hanihara et al. (1992); and Chen et al. (1995). The Cavalli-Sforza's chord genetic distance (4D), from Cavalli-Sforza & Bodmer (1971), which is based on the allele frequencies of the intergenic "COII/tRNALys" region, between Vietnamese and other East Asian populations in the study, from least to greatest, are as follows: Vietnamese to Indonesian (0.0004), Vietnamese to Chinese (0.0135), Vietnamese to Japanese (0.0153), Vietnamese to Korean (0.0265) and Vietnamese to Mongolian (0.0750).Lys" region." The caption in Table 2 misspelled the word "chord" as "cord." The Cavalli-Sforza's chord genetic distance (4D) is indicated to be from Cavalli-Sforza & Bodmer (1971) in the first sentence of the third paragraph of the left column of page 5/6 of the PDF document (page 396).-->