title: Corrigendum: use of emerging technologies to assess differences in outdoor physical activity in st. Louis, missouri.
abstract: [This corrects the article on p. 41 in vol. 2, PMID: 24904908.].
authors: Brown School, Washington University in St. Louis , St. Louis, MO , USA.
authors: Deepti
authors: D
authors: Adlakha
authors: Brown School, Washington University in St. Louis , St. Louis, MO , USA.
authors: Elizabeth L
authors: EL
authors: Budd
authors: Brown School, Washington University in St. Louis , St. Louis, MO , USA.
authors: Rebecca
authors: R
authors: Gernes
authors: Brown School, Washington University in St. Louis , St. Louis, MO , USA.
authors: Sonia
authors: S
authors: Sequeira
authors: Brown School, Washington University in St. Louis , St. Louis, MO , USA.
authors: James A
authors: JA
authors: Hipp
keywords: MapMyRun.com; parks; physical activity; socioeconomic status; web data feeds