1. World Health , O. ( 2019 ). World health statistics 2019: monitoring health for the SDGs, sustainable development goals . World Health Organization . World Health, O. (2019). World health statistics 2019: monitoring health for the SDGs, sustainable development goals. World Health Organization.
2. Estimation of Blood Pressure and Pulse Transit Time Using Your Smartphone
3. Abdel Hakim , K. A. ( 2011 ). Continuous non-invasive BP monitoring: service evaluation during induction of anaesthesia and haemodialysis . Abdel Hakim, K. A. (2011). Continuous non-invasive BP monitoring: service evaluation during induction of anaesthesia and haemodialysis.
4. Characterization of the oscillometric method for measuring indirect blood pressure
5. Paulus , D. A. ( 1981 ). Noninvasive blood pressure measurement. Medical instrumentation, 15(2), 91-94 . Paulus, D. A. (1981). Noninvasive blood pressure measurement. Medical instrumentation, 15(2), 91-94.