6MWT	6-Minute walking Test
ADL	Activities of Daily Living
BDI-II	Beck Depression Inventory-II
BMI	Body Mass Index
CD	Cluster of Differentiation
CES-D	Center for Epidemiologic Studies Depression Scale
CIRS	Cumulative Illness Rating Scale
COPD	Chronic Obstructive Pulmonary Disease
CRP	C reactive protein
DMSO	Dimethylsulfoxide
FEV1	Forced Expiratory Volume in 1 s
GOLD	Global initiative for chronic Obstructive Lung Diseases
IADL	Instrumental Activities of Daily Living
IL-6	interleukine-6
MMSE	Mini-Mental State Examination
MRC	modified Medical Research Council (Dyspnoea Scale)
MRF-26	Maugeri Respiratory Failure 26 questions
PLT	Platelets
PR	Pulmonary Rehabilitation
QoL	Quality of Life
RBC	Red Blood Cells
SF-36	36-Item Short Form Health Survey—General Health domain;
TTV	Torque Teno Virus
VZV	Varicella Zoster Virus
WBC	white blood cells
ZUNG	Zung Self-Rating Depression Scale