Text Messaging and Web-Based Survey System to Recruit Patients With Low Back Pain and Collect Outcomes in the Emergency Department: Observational Study.
Anita Barros AmorimDanielle M CoombsBethan RichardsChristopher G MaherGustavo C MachadoPublished in: JMIR mHealth and uHealth (2021)
RR2-10.1136/bmjopen-2017-019052.