To identify whether the (replicated) SNVs identified here affected other traits, we queried the GWAS Catalog [38] (version: e91/28/02/2018, downloaded on 01/03/18) for genome-wide significant (P < 5 × 10−8) associations using all proxy SNVs (r2 ≥ 0.8) within 2 Mb of the top variant in our study.