COVID-19	Coronavirus disease 2019
SARS-CoV	Severe Acute Respiratory Syndrome Coronavirus
SARS-CoV-2	Severe Acute Respiratory Syndrome Coronavirus 2
ACE2	Angiotensin-converting enzyme 2
TMPRSS2	Transmembrane protease serine 2
GH	Growth hormone
TSH	Thyroid-stimulating hormone
ACTH	Adrenocorticotropic hormone
CD	Cushing disease
NTIS	Non-thyroidal illness syndrome
GD	Graves’ disease
ATD	Antithyroid drugs
IL-6	Interleukin-6
VD	Vitamin D
VDD	Vitamin D deficiency
1,25(OH)2-VD	Calcitriol
RANK (L)	Receptor activator of nuclear factor-kB (ligand)
DXA	Dual X-rays Absorption
CS	Cushing syndrome
APC(s)	Activated antigen-presenting cell(s)
NK	Natural killer
TNF-a	Tumor necrosis factor-alpha