title: Proper propulsion.
authors.affiliation: Research Laboratories, VA Pittsburgh HealthCare System, Pittsburgh, USA.
authors.forename: Alicia M
authors.initials: AM
authors.lastname: Koontz
authors.forename: Michael L
authors.initials: ML
authors.lastname: Boninger
mesh_terms: D004867:Equipment Design; D006801:Humans; D009038:Motion; D014910:Wheelchairs