Liu I, Hu L, Luo J, Liu C, Zhong Q, Ni S
Assessing Mental Health and Emotional States by Using Smartphone Photoplethysmography–Based Digital Pulse Waveform Analysis: Cross-Sectional Observational Study
JMIR Mhealth Uhealth 2026;14:e81301
URL: mhealth.jmir.org/2026/1/e81301
DOI: 10.2196/81301