S Aymé, J Schmidtke. Networking for rare diseases: a necessity for Europe. „Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz”. 50 (12), s. 1477–83, December 2007. DOI: 10.1007/s00103-007-0381-9. PMID: 18026888. (ang.).
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S Aymé, J Schmidtke. Networking for rare diseases: a necessity for Europe. „Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz”. 50 (12), s. 1477–83, December 2007. DOI: 10.1007/s00103-007-0381-9. PMID: 18026888. (ang.).