[1] Univ Minnesota, Sch Publ Hlth, Div Hlth Policy & Management, Minneapolis, MN 55455 USA
[2] Northwestern Univ, Feinberg Sch Med, Dept Prevent Med, Chicago, IL USA
[3] Univ Michigan, Transportat Res Inst, Ctr Management Informat Safe & Sustainable Transpo, Ann Arbor, MI USA
[4] Emmanuel Coll, Dept Psychol, Boston, MA USA
[5] Brown Univ, Sch Publ Hlth, Dept Hlth Serv Policy & Practice, Providence, RI USA
[6] Univ Minnesota, Med Sch, Cardiovasc Div, Minneapolis, MN 55455 USA
[7] Univ Minnesota, Sch Publ Hlth, D351 Mayo Bldg,420 Delaware St SE,MMC 729, Minneapolis, MN 55455 USA