The above-referenced article contained an error in the far-right column heading in Table 2. The heading should read as follows: PPV % (TP/TP + FP) × 100 where PPV = positive predictive value, TP = true positive cases, and FP = false positive cases.

In addition, the second sentence of the last paragraph is amended to read, “At least two things warrant further research including other ethnic backgrounds.”

The authors and editors apologize for the errors. The online version of the article ( has been corrected.

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