Multi-Site Photoplethysmographic and Electrocardiographic System for Arterial Stiffness and Cardiovascular Status Assessment. - David Perpetuini; Antonio Maria Chiarelli; Lidia Maddiona; Sergio Rinella; Francesco Bianco; Valentina Bucciarelli; Sabina Gallina; Vincenzo Perciavalle; Vincenzo Vinciguerra; Arcangelo Merla; Giorgio Fallica (Sensors, 2019)