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Letters Cycling in urban environments

Authors’ reply to Fishman and Soutter

BMJ 2011; 343 doi: (Published 13 September 2011) Cite this as: BMJ 2011;343:d5774
  1. David Rojas-Rueda, predoctoral researcher1,
  2. Audrey de Nazelle, researcher1,
  3. Mark J Nieuwenhuijsen, research professor1
  1. 1Centre for Research in Environmental Epidemiology, 08003 Barcelona, Spain
  1. drojas{at}

We started with the assumption that 90% of Bicing users previously made the same trip by car and conducted further (sensitivity) analyses using other scenarios of mode shift (assuming that 9.6% of Bicing users came from cars, 55.1% from public transport, and 26.1% from walking) (see web appendix to …

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