AUTHOR CONTRIBUTIONS:
MSS and ELR had full access to all the data and take responsibility for the accuracy of the analysis.
Study concept and design: MSS, TAS, DLG, KGP
Acquisition, analysis, or interpretation of data: MSS, TH, RI
Drafting of the manuscript: MSS, RI, TH, EMU, ACC, KGP
Critical revision of the manuscript for important intellectual content: All authors
Statistical analysis: MSS, ELR
Administrative, technical, or material support: NN, TAS
Study supervision: KGP