Assessment of health-related quality of life in patients with heart failure: a cross-sectional study in Saudi Arabia oleh Muslet Alharbi, Fahad Alharbi, Abdullah AlTuwayjiri, Yaqoub Alharbi, Yazeed Alhofair, Ahmed Alanazi, Faisal AlJlajle, Rehana Khalil, Osama Al-Wutayd