https://pubmed.ncbi.nlm.nih.gov/22994354/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851032/

https://pubmed.ncbi.nlm.nih.gov/11252991/

https://pubmed.ncbi.nlm.nih.gov/14566342/

https://pubmed.ncbi.nlm.nih.gov/12652346/