We thank the volunteers for their participation. Each of the 5 authors participated in the work to take public responsibility for appropriate portions of the content. DG, CL, and GD conducted the study (from subject selection to blood samplings, including the OGTTs) and performed the statistical analysis. SN conducted the final statistical analysis with complete data review (including a rewrite of the statistical analysis and results sections). CF ideated the study, designed the study protocol, supervised the entire work, and prepared the manuscript. DG and SN prepared the figures. The authors declared that no conflict of interest existed.