Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0952-8180(20)31264-2
Anesthesia free resource MedlinePlus Health Information https://medlineplus.gov/anesthesia.html
subscription/membership/fee required ClinicalKey https://www.clinicalkey.com/content/playBy/pii?v=S0952-8180(20)31264-2