 - For Group 1 - EITHER 1 The second dose of HPV vaccine must not have been administered and it must be within the specified dosing interval for the second dose of HPV vaccine 90 days since the first dose of HPV vaccine OR 2 The second dose of HPV vaccine must have been administered 90 days after the first dose of HPV vaccine and it must be within the specified dosing interval for the third dose of HPV vaccine 60 days - 180 days since the second dose of HPV 