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Water-filtered Infrared A (wIRA) Irradiation
              As the editor, I feel the strong obligation to express my severe thanks to several 
enthusiastic supporters and “helping hands” who have enabled the realization of this 
book project. First of all, I have to thank my wife Lieselotte Vaupel for her tireless 
efforts and patience during project planning and editing of this book. In addition, 
thanks go to all authors and co-authors from the Netherlands, Switzerland, Austria, 
the USA, the UK, South Africa, and Germany for allocating a signifcant amount of 
time from their busy schedules to provide their unique and most important 
contributions            
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