Author contributions
The authors’ responsibilities were as follows – CMS, EMR, KLC, HOS, MHC: designed research; CMS, EMR, KLC, CMJ, MLB, BJ, HOS, CS, RV, MHC: conducted research; CMS, MLB, RV: analyzed data or performed statistical analysis; CMS: wrote paper, CMS, EMR, MHG: had primary responsibility for final content; and all authors: read and approved the final manuscript.