Name | Info | Provider | Link |
---|---|---|---|
free resource | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0741521498001578 | |
Endoscopy | free resource | MedlinePlus Health Information | https://medlineplus.gov/endoscopy.html |
subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=9620149.ui |