Wearable-Measured Sleep and Resting Heart Rate Variability as an Outcome of and Predictor for Subjective Stress Measures: A Multiple N-of-1 Observational Study. - Herman J. de Vries; Helena J. M. Pennings; Cees P. van der Schans; Robbert Sanderman; Hilbrand K. E. Oldenhuis; Wim Kamphuis (Sensors, 2023)