TY - JOUR AU - Sun, Y; Thakor, N TI - Photoplethysmography Revisited: From Contact to Noncontact, From Point to Imaging JO - IEEE Trans Biomed Eng IS - 03 VL - 63 PY - 2016 DO - 10.1109/TBME.2015.2476337 L3 - PubMed-ID: 26390439 SP - 463 EP - 77 ER -