This study was enabled by a proprietary system created by SD Labs for gathering, digitally processing and displaying biometric data—including heart rate—in real-time.

As a new type of portable electronic device, flexible and wearable electronic system has broad applications in human-machine interaction, health monitoring, and medical care.

Study objective-To assess the prevalence of respiratory problems, and the relation of these problems with school attendance, medicine use, and medical treatment. Design-The Child Health Monitoring ...