[This corrects the article DOI: 10.2196/mhealth.6562.].
©Aarti Sathyanarayana, Shafiq Joty, Luis Fernandez-Luque, Ferda Ofli, Jaideep Srivastava, Ahmed Elmagarmid, Teresa Arora, Taheri Shahrad. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 25.11.2016.