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subscription/membership/fee required Atypon https://journals.healio.com/doi/10.3928/1081597X-20140903-02?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Keratoconus free resource Genetic Alliance https://www.diseaseinfosearch.org/result/3973
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=25291752.ui
free resource scite Smart Citations https://scite.ai/reports/25291752