Pedestrians' perceptions of walkability and safety in relation to the built environment in Cali, Colombia, 2009–10
Andrés Villaveces, Luis Alfonso Nieto, Delia Ortega, José Fernando Ríos, John Jairo Medina, María Isabel Gutiérrez, Daniel Rodríguez
Injury Prevention Oct 2012, 18 (5) 291-297; DOI: 10.1136/injuryprev-2011-040223