COX	cyclooxygenase
HNC	head and neck cancers
OSCC	oral squamous cell carcinoma
HPV	human papillomavirus
OPSCC	oropharyngeal squamous cell carcinoma
PG	prostaglandin
NPC	nasopharyngeal carcinoma
HR	hazard ratio
EP	prostanoid receptors
PGE2	prostaglandin E2
VEGF	vascular endothelial growth factors
HNSCC	head and neck squamous cell carcinoma
AdCC	adenoid cystic carcinomas
MEC	mucoepidermoid carcinoma
TSCC	tongue squamous cell carcinoma
LSCC	laryngeal squamous cell carcinoma
OTSCC	oral tongue squamous cell carcinoma
HPSCC	hypopharyngeal squamous cell carcinoma