(1)
Saima Shaheen; Maria Sarfraz; Anum Saeedullah; Nadia Qazi; Tahira Jehangir; Sara Mariyum. Role of Supplementation of Vitamin C and D in Their Low Serum Values in Critically Ill COPD Patients of Tertiary Care Hospital. Pak J Chest Med 2022, 28, 46-53.