[1] Natl Canc Registry Ireland, Cork, Ireland
[2] Univ Coll Cork, Dept Epidemiol & Publ Hlth, Cork, Ireland
[3] Dublin City Univ, Sch Nursing & Human Sci, Dublin, Ireland
[4] Adelaide & Meath Hosp, Dept Clin Med, Trinity Ctr Hlth Sci, Dublin, Ireland
[5] Newcastle Univ, Inst Hlth & Soc, Newcastle Upon Tyne, Tyne & Wear, England