%0 Journal Article %@ 2291-5222 %I JMIR Publications %V 7 %N 1 %P e12576 %T Correction: Medical-Grade Physical Activity Monitoring for Measuring Step Count and Moderate-to-Vigorous Physical Activity: Validity and Reliability Study %A O'Brien,Myles William %A Wojcik,William Robert %A Fowles,Jonathon Richard %+ Centre of Lifestyle Studies, School of Kinesiology, Acadia University, 550 Main Street, Wolfville, NS,, Canada, 1 9025851560, jonathon.fowles@acadiau.ca %D 2019 %7 03.01.2019 %9 Corrigenda and Addenda %J JMIR Mhealth Uhealth %G English %X %M 30609987 %R 10.2196/12576 %U https://mhealth.jmir.org/2019/1/e12576/ %U https://doi.org/10.2196/12576 %U http://www.ncbi.nlm.nih.gov/pubmed/30609987