Name Info Provider Link
subscription/membership/fee required Atypon https://www.ajronline.org/doi/10.2214/AJR.14.13383
Liver Transplantation free resource MedlinePlus Health Information https://medlineplus.gov/livertransplantation.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26496544/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/26496544