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Chemotherapy already minimally effective
Meta-analyses have documented poor cancer drug efficacy/survival benefit results.
It is well established that most old [1][4] or novel [2][3][5][6][7][8][9] chemotherapeutic agents prolong patients' survival for only 3 months.
References
[1] http://www.bmj.com/content/355/bmj.i5792
[2] http://www.bmj.com/content/356/bmj.j30
[3] http://www.bmj.com/content/357/bmj.j2129
[4] https://www.ncbi.nlm.nih.gov/pubmed/15630849
[5] http://www.bmj.com/content/359/bmj.j4530
[6] http://www.bmj.com/content/359/bmj.j4543
[7] http://www.bmj.com/content/359/bmj.j4528
[8] https://www.nature.com/articles/s41408-017-0009-8/figures/1
[9] https://www.nature.com/articles/s41408-017-0009-8.epdf?author_access_tok...
Competing interests: No competing interests