CIGV participated of the study design, perform the genotyping and drafted the manuscript; AS participated of the study design, performed statistical analysis and drafted the manuscript. TTN performed statistical analysis. AB and HG performed genotyping. GB, HJW, DR, HV, TR, WR, TI, and HEW participated of the study design; JH and AH conceived the study, participated in its design and coordination and drafted the manuscript. All authors read and approved the final manuscript.
