Update README.md

README.md

@@ -35,7 +35,7 @@ This material contains content from:
 * __CHOP__ (https://www.bfs.admin.ch/bfs/de/home/statistiken/kataloge-datenbanken/publikationen.assetdetail.13772937.html) © BFS - 2020, Bundesamt für Statistik, Medizinische Klassifikation, Switzerland
 * __ICD-10-GM__ (https://www.dimdi.de/dynamic/de/klassifikationen/icd/)The ICD-10-GM RDF file has been produced using the ICD-10-GM machine-readable version of the German Institute of Medical Documentation and Information (DIMDI) which belongs to the BfArM and is available on the Website www.dimdi.de. Download conditions and terms of use published by the BfArM apply ([available on BfArM website](https://www.bfarm.de/EN/Code-systems/Classifications/ICD/ICD-10-GM/_node.html)).
 * __LOINC__ (http://loinc.org). LOINC is copyright © 1995-2020, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license. LOINC® is a registered United States trademark of Regenstrief Institute, Inc.
-* __SNOMED CT__ (https://www.snomed.org/), SNOMED CT is copyright © SNOMED International 2021 v3.15.1., SNOMED CT international. In order to use the file please register with eHealth Suisse for an affiliate license for SNOMED CT (free) https://www.e-health-suisse.ch/technik-semantik/semantische-interoperabilitaet/snomed-ct/registration-und-lizenz.html
+* __SNOMED CT__ (https://www.snomed.org/), SNOMED CT is copyright © SNOMED International 2021 v3.15.1., SNOMED CT international. In order to use the file please register with eHealth Suisse for an affiliate license for SNOMED CT (free) https://www.e-health-suisse.ch/technik-semantik/semantische-interoperabilitaet/snomed-ct/registration-und-lizenz.html. Note: for compliance purposes, whoever distributes the SNOMED CT RDF received through the Terminology Service must keep a record of users using it.
 * __UCUM__ (https://ucum.org/trac) The copyright follows the instructions provided by Regenstrief Institute. UCUM is Copyright © 1999-2013 Regenstrief Institute, Inc. and The UCUM Organization, Indianapolis, IN. All rights reserved. See [Copyright Notice and License] (https://ucum.org/trac/wiki/license), in particular the Disclaimer of Warranty (Section 7).
 
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