“The Correlation Level of Stress at the Start of Pandemic Covid-19 Related to the Frequency of Relapse in Coronary Heart Disease Patients: The Correlation Level of Stress at the Start of Pandemic Covid-19” (2020) Jurnal Ilmiah Wijaya, 11(2). Available at: https://jurnalwijaya.com/index.php/jurnal/article/view/123 (Accessed: 25April2024).