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The world's pressing healthcare needs may benefit from judicious application of networked information technology. Future networked information systems will support, for example, clinical workflow, remote diagnosis and consultation, e-prescribing, and mobile data collection and surveillance, disease outbreak identification and patient participation in their own wellbeing and care. Mobile-computing technology may be particularly helpful in improving access to healthcare (geography, monetary and informational), by encouraging personal health management, and by enabling patient and provider mobility. Wearable medical devices are emerging, to measure essential vital signs like pulse, respiration, ECG, blood glucose level, and patient mobility. Handheld devices support clinicians in urban hospitals, and portable diagnostic kits allow remote healthcare teams to more easily reach rural villages.