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subscription/membership/fee required Atypon https://journals.sagepub.com/doi/10.1016/j.otohns.2004.02.053?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0194599804002748
Skin Cancer free resource MedlinePlus Health Information https://medlineplus.gov/skincancer.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15467609.ui
subscription/membership/fee required Wiley https://doi.org/10.1016/j.otohns.2004.02.053