Name Info Provider Link
free resource Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0002-9297(18)30422-1
Choosing a Doctor or Health Care Service free resource MedlinePlus Health Information https://medlineplus.gov/choosingadoctororhealthcareservice.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30609404/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/30609404