Inside Health 2/4/13

http://www.bbc.co.uk/programmes/b019dl1b

http://www.abstracts2view.com/sabcs11/viewp.php?nu=P3-09-02

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3017674/

http://www.ncbi.nlm.nih.gov/pubmed/23171320

http://www.ncbi.nlm.nih.gov/pubmed/9538962

http://www.ncbi.nlm.nih.gov/pubmed/22735163

http://onlinelibrary.wiley.com/doi/10.1111/j.1467-789X.2011.00873.x/full

http://www.journals.elsevierhealth.com/periodicals/yjada/article/S0002-8223(95)00155-7/abstract