i https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6284174/
ii https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3687637/
iii https://www.ncbi.nlm.nih.gov/pubmed/3139337
iv https://www.ncbi.nlm.nih.gov/pubmed/25788177
v https://www.ncbi.nlm.nih.gov/pubmed/24390903
vi https://www.ncbi.nlm.nih.gov/pubmed/19016404
vii https://www.ncbi.nlm.nih.gov/pubmed/10839209
viii https://www.ncbi.nlm.nih.gov/pubmed/10839209
ix https://www.ncbi.nlm.nih.gov/pubmed/12725561
x https://www.ncbi.nlm.nih.gov/pubmed/15256690
xi https://www.ncbi.nlm.nih.gov/pubmed/11081987
xii https://www.ncbi.nlm.nih.gov/pubmed/25970041
xiii https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4942897/
xiv https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3808124/
xv https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5628357/
xvi https://www.ncbi.nlm.nih.gov/pubmed/10659900
xvii https://www.ncbi.nlm.nih.gov/pubmed/11798012
xviii https://www.ncbi.nlm.nih.gov/pubmed/11991768
xix https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5766689/
xx https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3986624/
xxi https://cebp.aacrjournals.org/content/26/3/435.1
xxii https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3048776/
xxiii https://www.ncbi.nlm.nih.gov/pubmed/28586165
xxiv https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5067830/
xxv https://www.ncbi.nlm.nih.gov/pubmed/29250843
xxvi https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3924990/
xxvii https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4835984/
xxviii https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5085873/
xxix https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469078/
xxx https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5446408/
xxxi https://www.ncbi.nlm.nih.gov/pubmed/30799194
xxxii https://www.ncbi.nlm.nih.gov/pubmed/19254366
xxxiii https://www.ncbi.nlm.nih.gov/pubmed/21697664
xxxiv https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2931392/
xxxv https://www.ncbi.nlm.nih.gov/books/NBK132337/
