Comparison of procalcitonin, C-reactive protein and neutrophil/lymphocyte ratio in prediction of noninvasive mechanical ventilation failure in patients admitted to the emergency department with COPD exacerbation

• Hasan Sefa ÇatalKocaeli Üniversitesi
• Nurettın Özgür DoğanKocaeli Üniversitesi
• İbrahim Ulaş ÖzturanKocaeli Üniversitesi
• Murat PekdemirKocaeli Üniversitesi
• Elif YakaKocaeli Üniversitesi
• Serkan YılmazKocaeli Üniversitesi