TY - JOUR AU - Tran, Irene AU - Clark, B. Ruth AU - Racette, Susan B. PY - 2013 TI - Physical Activity During Recess Outdoors and Indoors Among Urban Public School Students, St. Louis, Missouri, 2010-2011 T2 - Preventing Chronic Disease JO - Prev Chronic Dis SP - E196 VL - 10 CY - Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. N2 - SN - 1545-1151 UR - http://dx.doi.org/10.5888/pcd10.130135 DO - 10.5888/pcd10.130135 ER -