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...the Veritas Team

Dr Esther J van Zuuren MD


Esther’s expertise is founded in allergy and related evidence-based medicine,  subjects upon which she has been extensively reported and published in numerous professional journals.  These include the British Journal of Dermatology where she is the Associate Editor for Systematic Review, the Journal of the American Academy of Dermatology, JAMA Dermatology, JAMA, New England Journal of Medicine, Contact Dermatitis and Allergy.  Furthermore, she has been Key Editor and Methods Editor for the Cochrane Skin Group and published more than 20 systematic reviews in the Cochrane Library.  Esther is also Recommendation Editor for DynaMed and is a member of the GRADE working group. In addition to her responsibilities for dermatology training at Leiden University Medical Centre she is closely involved in the development of national clinical dermatological guidelines for the Netherlands.




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James Mason BSc (Hons) CDipAF (ACCA)

Managing Director


An experienced senior board director James has managed business communications companies, domestically and internationally, over many years.  Grounded in market research he has advised on and created accountable marketing communication campaigns for some of the world’s leading international corporations, governments and academic institutions.  His assignments have been global in reach providing him with a critical insight into the complex and diverse economic, cultural and ethical sensitivities that inform on 21st century business opportunities.  A keen advocate of evidence-based medicine he works closely with Zbys spear-heading the company’s strategic development in this field. 


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