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A.Vogel A.Vogel Advisory Board

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Sylvia Bommer
Medical Practitioner
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As a member of the medical department of a leading Swiss phytopharmaceutical manufacturer, Silvia Bommer, M.D. brings a great deal of specific knowledge to help people understand herbal medicine and how to use it.  Sylvia has training, certificates and practice in phytotherapy, homeopathy, anthroposophical, and chinese medicine as well as other types of complementary therapies like neuraltherapy, reflexology, and nutrition.  Sylvia works in complementary and conventional practice as assistant and leading physician.

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Jan de Vries
Naturopath
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Jan de Vries graduated from pharmacy in 1958. He later studied homeopathy in Germany and worked in China studying acupuncture. With Dr. Vogel, Jan set up the first naturopathic clinic in Holland in 1960 and together they started the company Biohorma which imported herbal and homeopathic medicines.  Jan’s desire to study further has led him to traveling around the world, living with natives in many under-developed countries and studying herbal medicine in all its various forms. Jan set up a clinic in Auchenkyle, Scotland.  He lectures extensively throughout Britain and is a regular guest on 16 national radio and television programs.  Currently he has written twenty books on a myriad of health problems, and writes for magazines and newspapers. The Jan de Vries Benevolent Trust was founded in order to help the less privileged have access to alternative medicine and to help fund research.  The recognition of his work has led to him being given many honorary decorations one of which is the The Dag Hammarskjold Award from the United Nations. He is presently involved in research work for the EEC in proving the efficacy of complementary medicine.

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Dr Jen W Tan
MB;BS
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Dr Jen W Tan trained as a doctor in the Medical School of the University of Newcastle-on -Tyne, UK. Following graduation, Dr. Tan did a series of medical rotations, concentrating primarily on the Cardiac and Respiratory areas.  He moved to an interest in Herbal Medicine in 1990, joining Jan de Vries in his clinic. At the same time, he became more involved in Bioforce (UK) Ltd, providing advice in the areas of product information and regulatory affairs, including setting up the GMP operation in Irvine. Dr. Tan conducted a number of research projects involving complementary medicine within the 'National Health Service' system. Currently, his research interests are centered around the Clinical Trial Department that is being developed in Irvine.

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Lyle L. Leffler
D. Hom.
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Lyle Leffler graduated from the Canadian College of Massage and Hydrotherapy in 1968.  He continued his studies in Osteopathy, Phytotherapy and Homeopathy at the Anglo-American Institute of Drugless Therapy, graduating in 1970 with a Doctorate of Naturopathy. In 1975 Lyle Leffler founded the Natural Health Care Clinic situated in Woodstock, Ontario.  He has devoted his life to addressing people’s health issues, applying the doctrine of Dr. Alfred Vogel.  In 1985, Natural Health Care had outgrown its facilities and rebuilt a state of the art clinic which is now located at 312 Dundas Street, in Woodstock.

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Chanchal Cabrera
Medical Herbalist
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Chanchal Cabrera has been a member of the National Institute of Medical Herbalists since 1987 and practices as a medical herbalist and clinical aromatherapist.  She is associate editor of Medical Herbalism newsletter and serves on the board of advisors of Bastyr University and Dominion Herbal College and the Board of Directors of Wellsprings Centre for Natural Healing. She is the founder of a full service herbal dispensary and clinic in Vancouver, British Columbia and was a member of the federal Canadian Advisory Panel on Natural Health Products.  She is presently a member of the Expert Advisory Committee of the Office of Natural Health Products.

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Joanne DeGrâce
nd
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JoAnne DeGrace has a degree in Psychology,special education and naturopathy. She also has training in homeopathy, aromatherapy and kinesiology.A former yoga instructor,JoAnne DeGrace has a great interest for Ayurvedic medicine and its nutritional approach.Practicing naturopathic medicine in the province of Quebec for the past eight years, she specializes in pediatrics, hormonal and digestive problems.Familiar with the effectiveness and reliability of Bioforce-A.Vogel products,she has recommended them to her clients throughout her career.Her current activities include conducting extensive lectures and workshops in the prevention of various health problems.She also writes articles for local health and news magazines.

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Steven Foster
President of Steven Foster Group Inc
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One of the most respected names in herbal medicine, with over 23 years of experience, Steven Foster, is an author, photographer, and consultant specializing in medicinal and aromatic plants. Steven Foster has served as a medicinal and aromatic plant specialist, writer, lecturer, and photographer. He has over 690 photo - illustrated articles in popular, trade, and scientific journals. He serves as Editor of the Herbs for Health Supplement in The Herb Companion, Associate Editor for Herbalgram, the Business of Herbs, and the Journal of Herbs, Spices, and Medicinal Plants. He is the author of eleven books and several book chapters.

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Dr. Timothy Johns
Ethnobotanist
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Dr. Johns holds the title of Associate Professor of Human Nutrition at McGill University. At McGill he teaches a course entitled Herbs, Foods and Phytochemicals.  He is the author of The Origins of Human Diet and Medicine and co-author of Functionality of Food Phytochemicals and Luo-English Biological Dictionary in addition to his publications in scientific journals.  He is director of the "Centre for Indigenous People’s Nutrition" and the Environment (CINE). Dr. Johns is an ethnobotanist whose research interests focus on the traditional uses of plants for food and medicine in relation to issues of nutrition and health.

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