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Anthamatten, Peter; Fiene, Erin; Kutchman, Eve; Mainar, Melanie; Brink, Lois; Browning, Ray; Nigg, Claudio R. (2014). A Microgeographic Analysis of Physical Activity Behavior within Elementary School Grounds. American journal of health promotion, 28(6), pp. 403-412. Sage 10.4278/ajhp.121116-QUAN-566
