AllelesGenotypeGenetic MarkersModels, GeneticChromosome MappingGene FrequencyGenetic VariationPolymorphism, GeneticGenetic LinkageLinkage DisequilibriumPhenotypeMutationMolecular Sequence DataSelection, GeneticBase SequenceSequence Analysis, DNAAmino Acid SequencePolymorphism, Single NucleotideGenetic Predisposition to DiseaseHaplotypesHeterozygoteHomozygotePolymerase Chain ReactionMicrosatellite RepeatsCase-Control StudiesHLA-DRB1 ChainsCrosses, GeneticPolymorphism, Restriction Fragment LengthGenetics, PopulationPedigreeGenetic Association StudiesAsian Continental Ancestry GroupExonsDNA Mutational AnalysisDNA PrimersHLA-DQ AntigensHLA-DR AntigensGenes, LethalGenetic LociGenes, DominantEuropean Continental Ancestry GroupHLA-B AntigensGenes, RecessiveApolipoprotein E4