Ahmed, Raja Zafar, et al. “CIRCADIAN VARIATION IN THE ONSET OF ACUTE PULMONARY EDEMA IN DIABETIC AND NONDIABETIC PATIENTS”. Journal of Ayub Medical College Abbottabad, vol. 11, no. 1, Feb. 1999, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/5098.