GPT and susceptibility to pneumonia measurement: AHT - arterial hypertension, ALT - alanine transaminase, AST - aspartate transaminase, COPD - chronic obstructive pulmonary disease, CRP - C-reactive protein, DM - diabetes mellitus, ICU - intensive care unit, IL-6 - Interleukin-6, LDH - lactate dehydrogenase, N-to-L Ratio - neutrophil to lymphocyte ratio, O2 - oxygen, OP - organising pneumonia, OSCI - Ordinal Scale for Clinical Improvement, Sup.