SNP genotyping was performed using Taqman® SNP Genotyping Assays (Applied Biosystems Inc. (ABI); Foster City, CA, USA) as per manufacturer protocol. Quality control was maintained by genotyping 10% duplicates which were checked for genotype concordance across the populations. Duplicate concordance was 100% across all populations genotyped. Genotypes were checked for deviation from Hardy-Weinberg Equilibrium (HWE) as a second measure of quality control. No significant deviations from HWE were observed in cases or controls in either population (all tests p>0.51).
