or vice versa (REF_HTF) to control for the variable of listening fatigue or practice effects after。

https://www.apple.com/jp/health/pdf/Hearing_Health_Features_on_AirPods_Pro_2_October_2024.pdf

099-15923-B to C Redlines Apple_Watch_Arrhythmia_Detection_DEC2018_cl-AM_cl Using Apple Watch for Arrhythmia Detection December 2020 Overview 3 Introduction...

https://www.apple.com/jp/healthcare/docs/site/Apple_Watch_Arrhythmia_Detection.pdf