Study protocol: health survey of Sao Paulo: ISA-Physical Activity and Environment - Florindo, Alex Antonio; Teixeira, Inaian Pignatti; Barrozo, Ligia Vizeu; Sarti, Flávia Mori; Fisberg, Regina Mara; Andrade, Douglas Roque; Garcia, Leandro Martin Totaro (BMC Public Health, 2021)