Stage 1 Coffee GWAS among drinkers (CCGC, Mol Psych, 2015) 
N<=91,462
'imp100': Results for SNPs 100% imputed excluded (see paper for additonal filters)

SNP: rsid 
CHR: chromosome
BP: basepair position (HapMap R22, Hg18)
A1: allele 1, effect allele
A2: allele 2, other allele
EFFECT: beta coefficient, cups/d (among drinkers)
STDERR: standard error of EFFECT
P: pvalue