N. Nurkhalis, K. Jamil, I. Imran, and M. Yamin, “Effects of a Qur’an recitation intervention on SERCA2a and PIEZO1 gene expression, psychological well-being, and cardiac contractility in patients with heart failure with reduced ejection fraction: A randomized controlled trial”, Narra X, vol. 4, no. 3, p. e320, Sep. 2026.