TY - JOUR T1 - Steps challenge participants log more than 2 billion steps JF - The Nation's Health JO - Nations Health SP - 16 LP - 16 VL - 48 IS - 4 AU - Michele Late Y1 - 2018/06/01 UR - http://www.thenationshealth.org/content/48/4/16.3.abstract N2 - When APHA’s third National Public Health Week walking challenge launched in January, the goal was ambitious: Bring people and organizations together to walk, run or roll a billion collective steps in just three months. ER -