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Pooled relative risks and their 95% confidence intervals (95% CIs) for Parkinson's disease (PD) according to red hair color status (A; 1347 PD cases), MC1R p.R151C (rs1805007) (B; 8454 PD cases), and p.R160W (rs1805008) (C; 14934 PD cases) polymorphisms. HPFS = the health professionals follow‐up study; NHS = the nurses’ health study; PAGE = Parkinson's genes and environment; IPDGC = International Parkinson's Disease Genomics Consortium.
