A. D. Lopez, C. D. Mathers, M. Ezzati, D. T. Jamison, and C. J. Murray, Global and regional burden of disease and risk factors, Lancet, vol.367, pp.1747-1757, 2001.

, Centers of Disease Control and Prevention. Vital signs: Awareness and treatment of uncontrolled hypertension among adults, Morb. Mortal. Wkly. Rep, vol.61, pp.703-709, 2012.

N. Korotkoff, On methods of studying blood pressure, Bull. Imp. Mil. Med. Acad, vol.11, pp.365-367, 1905.

E. O'brien and N. Atkins, Accuracy of an oscillometric automatic blood pressure device: The Omron HEM403C, J. Hum. Hypertens, vol.9, pp.169-174, 1995.

E. O'brien, Blood pressure measuring devices: Recommendations of the European Society of Hypertension, BMJ, vol.322, pp.531-536, 2001.

A. Leung, Hypertension Canada's 2016 Canadian Hypertension Education Program Guidelines for Blood Pressure Measurement, Diagnosis, Assessment of Risk, Prevention and Treatment of Hypertension, Can. J. Cardiol, vol.32, pp.569-588, 2016.

F. Rundo, S. Conoci, A. Ortis, and S. Battiato, An Advanced Bio-Inspired PhotoPlethysmoGraphy (PPG) and ECG Pattern Recognition System for Medical Assessment, Sensors, vol.18, p.405, 2018.

F. Rundo, A. Ortis, S. Battiato, and S. Conoci, Advanced Bio-Inspired System for Noninvasive Cuff-Less Blood Pressure Estimation from Physiological Signal Analysis, Computation, vol.6, 2018.

Y. J. Wang, C. H. Chen, C. Y. Sue, W. H. Lu, and Y. H. Chiou, Estimation of Blood Pressure in the Radial Artery Using Strain-Based Pulse Wave and Photoplethysmography Sensors. Micromachines, vol.9, 2018.

S. H. Liu, D. C. Cheng, and C. H. Su, A cuffless blood pressure measurement based on the Impedance plethysmography technique, vol.17, 1176.

T. Huynh, R. Jafari, and W. Y. Chung, An Accurate Bioimpedance measurement system for blood pressure monitoring, Sensors, vol.18, 2018.

Z. D. Liu, J. K. Liu, B. Wen, Q. Y. He, Y. Li et al., Cuffless Blood Pressure Estimation Using Pressure Pulse Wave Signals, Sensors, vol.18, 2018.

E. Nye, The effect of blood pressure alteration on the pulse wave velocity, vol.26, pp.261-265, 1964.

B. Gribbin, A. Steptoe, and P. Sleight, Pulse wave velocity as a measure of blood pressure change, Psychophysiology, vol.13, pp.86-90, 1976.

S. E. Ahmad, Electrocardiogram-Assisted Blood Pressure Estimation, IEEE Trans. Biomed. Eng, vol.59, pp.608-618, 2012.

W. Chen, T. Kobayashi, S. Ichikawa, Y. Takeuchi, and T. Togawa, Continuous estimation of systolic blood pressure using the pulse arrival time and intermittent calibration, Med. Biol. Eng. Comput, vol.38, pp.569-574, 2000.

L. Peter, N. Noury, and M. Cerny, A review of methods for non-invasive and continuous blood pressure monitoring: Pulse transit time method is promising? IRBM, vol.35, pp.271-282, 2014.

J. Alastruey, K. Parker, and S. Sherwin, Arterial pulse wave haemodynamics, Proceedings of the 11th International Conference on Pressure Surges, pp.401-442, 2012.

Y. Zheng, C. C. Poon, and Y. T. Zhang, Investigation of Temporal Relationship between Cardiovascular Variables for Cuffless Blood Pressure Estimation, Proceedings of the 2012 IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI), pp.644-646, 2012.

X. Xing and M. Sun, Optical Blood Pressure Estimation with Photoplethysmography and FFT-Based Neural Networks, Biomed. Opt. Express, vol.7, pp.3007-3020, 2016.

Q. Li and G. G. Belz, Systolic time intervals in clinical pharmacology, Eur. J. Clin. Pharmacol, vol.44, pp.415-421, 1993.

R. E. Singh, Circadian heart rate and blood pressure variability considered for research and patient care, Int. J. Cardiol, vol.87, pp.9-28, 2003.

Q. Liu, B. P. Yan, C. M. Yu, Y. T. Zhang, and C. C. Poon, Attenuation of Systolic Blood Pressure and Pulse Transit Time Hysteresis During Exercise and Recovery in Cardiovascular Patients, IEEE Trans. Biomed. Eng, vol.61, pp.346-352, 2014.

F. S. Cattivelli and H. Garudadri, Noninvasive cuffless estimation of blood pressure from pulse arrival time and heart rate with adaptive calibration, Proceedings of the 6th International Workshop Wearable Implantable Body Sens. Networks (BSN), pp.114-119, 2009.

B. Mccarthy, B. O'flynn, and A. Mathewson, An Investigation of Pulse Transit Time as a Non-Invasive Blood Pressure Measurement Method, J. Phys. Conf. Ser, vol.307, 2011.

Y. Wong and Y. Zhang, The effects of exercises on the relationship between pulse transit time and arterial blood pressure, Proceedings of the 27th Annual International Conference of the Engineering in Medicine and Biology Society EMBS, pp.5576-5578, 2005.

M. M. Wong, E. Pickwell-macpherson, and A. Y. Zhang, The acute effects of running on blood pressure estimation using pulse transit time in normotensive subjects, Eur. J. Appl. Physiol, vol.107, pp.169-175, 2009.

Y. Choi, Q. Zhang, and S. Ko, Noninvasive cuffless blood pressure estimation using pulse transit time and Hilbert-Huang transform, Comput. Electr. Eng, vol.39, pp.103-111, 2013.

I. Jeong, J. Wood, and J. Finkelstein, Using individualized pulse transit time calibration to monitor blood pressure during exercise, Inf. Manag. Technol. Healthc, vol.190, pp.39-41, 2013.

Y. Yoon, J. Cho, and G. Yoon, Non-constrained Blood Pressure Monitoring Using ECG and PPG for Personal Healthcare. Pers. Heal, J. Med Syst, vol.33, pp.261-266, 2009.

M. F. Nichols and M. W. Kenney, McDonald's Blood Flow in Arteries, Theoretical, Experimental and Clinical Principles, J. Cardiopulm. Rehabil, vol.3, p.407, 1991.

T. Aoyagi, Pulse oximetry: Its invention, theory and future, J. Anesth, vol.17, pp.259-266, 2003.

I. Yoshiya, Y. Shimada, and A. K. Tanaka, Spectrophotometric monitoring of arterial oxygen saturation in the fingertip, Biol. Eng. Comput, vol.18, pp.27-32, 1980.

R. Gonzalez, A. Manzo, and J. Delgado, A computer based photoplethysmographic vascular analyzer through derivatives, Proceedings of the, pp.14-17, 2008.

R. Bhavirisetty, Calculation of Blood Pulse Transit Time from PPG, 2012.

R. , Introducing Easy Pulse: A DIY Photoplethysmographic Sensor for Measuring Heart Rate, p.12, 2012.

F. Foroozan, MUSIC-Based Algorithm for On-Demand Heart Rate Estimation Using Photoplethysmographic (PPG) Signals on Wrist, 2018.

J. Penaz, Photoelectric measurement of blood pressure, volume and flow in the finger, Proceedings of the Digest of the 10th International Conference on Medical and Biological Engineering, pp.13-17, 1973.

J. E. Wagenseil and R. P. Mecham, Elastin in Large Artery Stiffness and Hypertension, J. Cardiovasc. Transl. Res, vol.5, pp.264-273, 2012.

J. Allen and J. A. Murray, Age-related changes in peripheral pulse timing characteristics at the ears, fingers and toes, J. Hum. Hypertens, vol.16, pp.711-717, 2002.

M. Sharma, K. Barbosa, V. Ho, D. Griggs, T. Ghirmai et al., Cuff-Less and Continuous Blood Pressure Monitoring: A Methodological Review, vol.5, 2017.

H. Baek, K. Kim, J. Kim, B. Lee, and A. K. Park, Enhancing the estimation of blood pressure using pulse arrival time and two confounding factors, Physiol. Meas, vol.31, pp.145-157, 2010.

Z. Marcinkevics, M. Greve, J. Aivars, R. Erts, and A. Zehtabi, Relationship between arterial pressure and pulse wave velocity using photoplethysmography during the post-exercise recovery period, Biology, vol.753, pp.59-68, 2009.

B. Baldridge, Heart rate-arterial blood pressure relationship in conscious rat before vs. after spinal cord transection, Am. J. Physiol. Regul. Integr. Comp. Physiol, vol.283, pp.748-756, 2002.

P. Fung, G. Dumont, C. Ries, C. Mott, and M. Ansermino, Continuous noninvasive blood pressure measurement by pulse transit time, Conf. Proc. IEEE Eng. Med. Biol. Soc, vol.3, pp.738-741, 2004.

C. Poon and Y. Zhang, Cuff-less and Noninvasive Measurements of Arterial Blood Pressure by Pulse Transit Time, Conf. Proc. IEEE Eng. Med. Biol. Soc, vol.6, pp.5877-5880, 2005.

Y. Chen, C. Wen, G. Tao, M. Bi, and G. Li, Continuous and Noninvasive Blood Pressure Measurement: A Novel Modeling Methodology of the Relationship Between Blood Pressure and Pulse Wave Velocity, Ann. Biomed. Eng, vol.37, pp.2222-2233, 2009.

Y. Chen, C. Wen, G. Tao, and M. Bi, Continuous and Noninvasive Measurement of Systolic and Diastolic Blood Pressure by One Mathematical Model with the Same Model Parameters and Two Separate Pulse Wave Velocities, Ann. Biomed. Eng, vol.40, pp.871-882, 2012.

A. Arza, J. Lazaro, E. Gil, P. Laguna, J. Aguilo et al., Pulse transit time and pulse width as potential measure for estimating beat-to-beat systolic and diastolic blood pressure, Proceedings of the Computing in Cardiology, pp.887-890, 2013.

C. E. Manlises, Monitoring of Blood Pressure Using Photoplethysmographic (PPG) Sensor with Aromatherapy Diffusion, Proceedings of the Control System, Computing and Engineering (ICCSCE), pp.25-27, 2016.

, American National Standard: Electronic or Automated Sphygmomanometers; Association for the Advancement of Medical Instrumentatio, Licensee MDPI, 1987.