“…11,12 RAI has been tested and validated internationally 10,[13][14][15][16] -but only to a limited extent in Germany. 17 RAI is in widespread use, for example in Switzerland, Italy, The Netherlands, Iceland, Israel, Spain, England, Japan, the United States of America and Canada. 18 The results of studies on the effects of RAI have been predominantly-though not uniformly 19,20 -positive.…”