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 Patie... by Reade, Samuel, Spencer, Karen, Sergeant, Jamie C, Sperrin, Matthew, Schultz, David M, Ainsworth, John, Lakshminarayana, Rashmi, Hellman, Bruce, James, Ben, McBeth, John, Sanders, Caroline, Dixon, William G

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