1. Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Ain Shams University, Cairo, Egypt
2. Department of Pulmonary Medicine, Abbassia Chest Hospital, MOH, Cairo, Egypt
3. Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jingkou, China
4. Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt