Reference (author and year) | Reason for exclusion from this meta-analysis |
---|---|
Kultufan Turan et al. 2006 | Not possible to identify in PubMed or EMBASE |
Rauter et al. 2007 | Not possible to identify in PubMed or EMBASE |
Messenger et al. 2011 | Prospective cohort study, not randomised |