Citations:
http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2383/2
https://www.ncbi.nlm.nih.gov/pubmed/16231710
http://nutritiondata.self.com/facts/fruits-and-fruit-juices/2072/2
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2984110/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2984110/
http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1846/2
http://nutritiondata.self.com/facts/fruits-and-fruit-juices/2064/2
http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1966/2
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4668823/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3153292/
https://www.ncbi.nlm.nih.gov/pubmed/23411230
http://nutritiondata.self.com/facts/poultry-products/703/2
https://www.ncbi.nlm.nih.gov/pubmed/18656844
http://nutritiondata.self.com/facts/beef-products/6206/2
https://www.ncbi.nlm.nih.gov/pubmed/9111719
http://nutritiondata.self.com/facts/dairy-and-egg-products/111/2
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2684052/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2984110/
https://www.ncbi.nlm.nih.gov/pubmed/9248028
https://www.ncbi.nlm.nih.gov/pubmed/21486641
https://www.ncbi.nlm.nih.gov/pubmed/7848179
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2984110/
https://www.ncbi.nlm.nih.gov/pubmed/18656843