“…Maximum likelihood haplotype frequencies were estimated using the expectation-maximization (EM) algorithm, as implemented in the program ARLEQUIN 3.5. The classic coefficients of LD, D, and of normalized LD, which is also termed the relative delta value (D rel), were computed for each individual haplotype as described previously [20,[25][26][27]. Fisher's exact test was performed to determine the significance of D. The LD analysis was restricted to HLA-B-MICB, MICA-MICB haplotypes with observed frequencies >1.5%.…”