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Journal, MeDitorial, Prague, Czech Republic, in Czech
Integrated Publishing, Inc., Port Richey, USA
Emedicine.medscape, WebMD LLC, New York, USA
1st Spot, last update 2012
Journal, BMJ, London, UK
Journal, Priory Lodge Education Ltd., Brixham, UK
Journal, DOAJ, Kastrup, Denmark
Journal, BioMed Central, London, UK
Institute of Biotechnology, University of Helsinki, Finland
textbook, Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA