Correction: Strategies for the Successful Implementation of a Novel iPhone Loaner System (iShare) in mHealth Interventions: Prospective Study oleh William E Yang, Erin M Spaulding, David Lumelsky, George Hung, Pauline Phuong Huynh, Kellen Knowles, Francoise A Marvel, Valerie Vilarino, Jane Wang, Lochan M Shah, Helen Xun, Rongzi Shan, Shannon Wongvibulsin, Seth S Martin