AIDS	acquired immunodeficiency syndrome
BMI	body mass index
HCO	healthcare organization
HIV	human immunodeficiency virus
HPV	human papillomavirus
ICD	International Classification of Diseases
IL	interleukin
OLP	oral lichen planus
OPMD	oral potentially malignant disorder
OR	odds ratio
OSCC	oral squamous cell carcinoma
PFAPA	periodic fever, aphthous stomatitis, pharyngitis, and adenitis syndrome
RR	risk ratio
RAS	recurrent aphthous stomatitis
SIR	standardized incidence ratio
UICC	Union Internationale Contre le Cancer
WHO	World Health Organization