Several medical associations have advised against their use, including the National Institute for Health and Clinical Excellence,[2][3] the Australian College of Allergy,[1] the Australasian Society of Clinical Immunology and Allergy,[4] the American Academy of Allergy, Asthma and Immunology[5] and the Allergy Society of South Africa.[6] In 1990 a medical practitioner was censured by the Medical Practitioners Disciplinary Committee in New Zealand for using a Vega machine.[7] Another practitioner was censured by the Discipline Committee of the College of Physicians and Surgeons of Ontario in 1999 for having "failed to meet the standard of practice"[8] in his use of the Vega machine in diagnosis.[9]