HaplotypesGenotypePolymorphism, Single NucleotidePolymorphism, GeneticGene FrequencyAllelesGenetic VariationLinkage DisequilibriumGenetic Predisposition to DiseasePhylogenySequence Analysis, DNACase-Control StudiesGenetics, PopulationGenetic MarkersPolymorphism, Restriction Fragment LengthPolymerase Chain ReactionMolecular Sequence DataDNA, MitochondrialMicrosatellite RepeatsPhenotypeHomozygoteBase SequenceAsian Continental Ancestry GroupChromosome MappingModels, GeneticGenetic LinkageHLA-DQ AntigensEuropean Continental Ancestry GroupFounder EffectHLA-DQ beta-ChainsPedigreeHeterozygoteChinaHLA-DRB1 ChainsMutation