BMD	Bench-Mark Dose
CCE	Change in Cumulative Exposure
COPD	Chronic Obstructive Pulmonary Disease
EFSA	European Food Safety Authority
FDA	U.S. Food and Drug Administration
HI	Hazard Index
HPHC	Hazardous or Potentially Hazardous Compounds
HTP	Heated Tobacco Products
IUCLID	International Uniform ChemicaL Information Database
MAF	Mixture Assessment Factor
NOAEL	No-Observed Adverse Effect Level
NTP	US National Toxicology Program
RAAF	Read-Across Assessment Framework
REACH	Registration Evaluation Authorisation and Restriction of Chemicals Regulation
RPF	Relative Potency Factor
TPD	Tobacco Products Directive
TRP	Tobacco and Related Products
TTC	Threshold of Toxicological Concern
WHO	World Health Organization