RCT	randomized controlled trials
NRCT	non-randomized controlled trials
SMD	standard mean difference
WMD	weighted mean difference
OR	odds ratio
RR	relative risk
CI	confidence intervals
GRADE	the Grading of Recommendations, Assessment, Development and Evaluation
ATID	autoimmune thyroid disease
FT3	free triiodothyronine
FT4	free thyroxine
TSH	thyroid stimulating hormone
LT4	levothyroxine
TGAb	anti-thyroglobulin antibody
TPOAb	anti-thyroid peroxidase antibody
MMI	methimazole
HOMA-B	homeostasis model of assessment-estimated β-cell function
HOMA-IR	homeostasis model of assessment-estimated insulin resistance
QUICKI	quantitative insulin sensitivity check index
FPG	fasting plasma glucose
HbA1c	hemoglobin A1c
PCOS	polycystic ovary syndrome
TAC	total antioxidant capacity
SHBG	sex hormone binding globulin
TC	total cholesterol
VLDL	very low density lipoprotein-cholesterol
SBP	systolic blood pressure
DBP	diastolic blood pressure
TG	total triglyceride
LDL-C	lipoprotein-cholesterol
HDL-C	high-density lipoprotein-cholesterol
BMI	body mass index
ICU	intensive care units
hs-CRP	high sensitivity c-reactive protein
CRP	c-reactive protein
IQR	interquartile-range
CVD	cardiovascular disease
RDAs	recommended dietary allowances
GPXs	glutathione peroxidases
DIOs	iodothyronine deiodinases
SeMet	selenomethionine
ATP	adenosine triphosphate
PSTK	O-phosphoseryl-tRNA[Ser]Sec kinase
SEPHS2	selenophosphate synthetase 2
SEPSECS	Sec-tRNA synthase
SECIS	selenocysteine insertion sequence
ROS	reactive oxygen species
SELENOW	Selenoprotein W
SELENOT	Selenoprotein T
SELENOP	Selenoprotein P
NK cells	natural kill cells
IL	Interleukin
AIDS	acquired immune deficiency syndrome
COVID-19	corona virus disease-19
NF-κB	nuclear factor-kappa B
SNPs	single nucleotide polymorphisms
TR	thioredoxin reductase
CVB3	coxsackie virus B3
GCLC	γ-glutamate cysteine ligase