*"Unproven methods of cancer management. National Health Federation". CA Cancer J Clin. 41 (1): 61–4. 1991. doi:10.3322/canjclin.41.1.61. PMID 1898638. | *"Unproven methods of cancer management. National Health Federation". CA Cancer J Clin. 41 (1): 61–4. 1991. doi:10.3322/canjclin.41.1.61. PMID 1898638. |