qnli question: When did Boris Arkadievich Malyarchuk use a sample of Czech individuals to determine the frequency of "Monigoloid" "mtDNA lineages"? sentence: In 2008, biochemist Boris Arkadievich Malyarchuk (Russian: Борис Аркадьевич Малярчук) et al. of the Institute of Biological Problems of the North, Russian Academy of Sciences, Magadan, Russia, used a sample (n=279) of Czech individuals to determine the frequency of "Mongoloid" "mtDNA lineages".