School's out: what are urban children doing? The Summer Activity Study of Somerville Youth (SASSY).
Tovar
Alison
A
John Hancock Research Center on Physical Activity, Nutrition and Obesity Prevention, Gerald J and Dorothy R Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 0211, USA. alison.tovar@tufts.edu
Lividini
Keith
K
Economos
Christina D
CD
Folta
Sara
S
Goldberg
Jeanne
J
Must
Aviva
A