Cloudy with a Chance of Pain: Engagement and Subsequent Attrition of Daily Data Entry in a Smartphone Pilot Study Tracking Weather, Disease Severity, and Physical Activity in Patients With Rheumatoid ArthritisSamuel Reade, William G Dixon, David M. Schultz et al.|JMIR mhealth and uhealth|2017Cited by 88
Recruitment and Ongoing Engagement in a UK Smartphone Study Examining the Association Between Weather and Pain: Cohort StudyKatie L. Druce, William G Dixon, John McBeth et al.|JMIR mhealth and uhealth|2017Cited by 63