Huang, Jie, Yuhong Wu, Fang Li, Dan Zhang, and Shuping Tan. “Assessing Pulse Rate Variability from a Wrist-Worn PPG Device Against ECG-Derived Heart Rate Variability in Ambulatory Settings”. Smart Wearable Technology 2 (March 9, 2026): A3. Accessed March 19, 2026. https://ojs.bonviewpress.com/index.php/SWT/article/view/7605.