Author	Study concept and design	Acquisition of data	Analysis and interpretation	Drafting manuscript	Critical revisions	Statistical analysis
Lewis	X	X	X	X	X
Parlett	X	X	X		X	X
Jonsson-Funk	X	X	X		X
Brensinger	X		X		X	X
Pate	X		X		X	X
Wu			X		X	X
Dawwas	X		X		X
Weiss			X		X
Constant	X		X		X
McCauley		X			X
Haynes	X		X		X
Yang			X		X
Schaubel	X		X		X
Hurtado-Lorenzo			X		X
Kappelman	X		X		X