Content-based recommender support system for counselors in a suicide prevention chat helpline: design and evaluation study
Factors associated with dropout of participants in an app-based child injury prevention study: secondary data analysis of a cluster randomized controlled trial
Ride-hailing services and alcohol consumption: longitudinal analysis
Social, Cognitive, and eHealth Mechanisms of COVID-19-Related Lockdown and Mandatory Quarantine That Potentially Affect the Mental Health of Pregnant Women in China: Cross-Sectional Survey Study