Adyan Donastin; Danny Irawan; Effendy; Rifky Dwi Aditya Iryawan; Nuzlan Nuari; Betta Mega Oktaviana; Devy Yahya; Akbar Reza Muhammad. The Effect of Vitamin-D Supplementation on HDAC2 Levels in Stable COPD Patients . Health, sciences 2026, 19, 305-312.