... design,analysis and interpretation of data, statistical analysis, and critical revision of the manuscript. CG participated in the acquisition of data, administrative,technical, and material support, ... conception and design, acquisition of data, analysis and interpretation of data, drafting of the manuscript, statistical analysis, and the obtaining of funding. JS participated in the conception and ... support, and critical revision of the manuscript. JHparticipated in the conception and design, analysis and interpretatio n of data, and critical revision of the manuscript. All authors read and approvedthe...