Biochemical analysis
Serum levels of creatine kinase (CK) and lactate dehydrogenase (LDH)
were measured on Siemens Advia 1800 Chemisty System (Siemens Healthcare
Diagnostics, Newark, Germany) while ferritin levels were performed via
Siemens Advia Centaur XP Immunassay System (Siemens Healthcare
Diagnostics, Newark, Germany). CRP was determined by Siemens Dade
Behring BN II System (Siemens Healthcare Diagnostics, Marburg, Germany)
via nepholometric method. Leukocyte, neutrophils, lymphocytes,
eosinophils, and platelet counts in participating subjects were
determined by Mindray BC 6000 Hematology System (MINDRAY Medical
International Co., Shenzhen, China). D-dimer levels were studied on
VIDAS D-Dimer Exclusion™ II (BioMérieux, France) while fibrinogen was
measured on STA Compact Max (Stago, USA). Procalcitonin was measured by
Architecht i2000 SR Immunassay Analyzer (Abbott, USA).