" . . . it could be inferred that there is a relationship between HHV-6 and 7 in salivary glands neoplasms"

Epidemiology of Herpes Human Virus 6 and 7 Infections in Salivary Gland Neoplasms in Isfahan, Iran

http://www.academia.edu/7979518/Epidemiology_of_Herpes_Human_Virus_6_and_7_Infections_in_Salivary_Gland_Neoplasms_in_Isfahan_Iran

"HHV-6 and the HHV-7 have been identified as one of the most important oncogenic viruses"