**Acknowledgements**

 Dr. Robert Russell chaired the 'panel on micronutrients' the output of which, published in 2001 [72], created the US Governments' dietary reference intakes for 14 micronutrients, including vitamin A. Also, in 2001, he joined the Golden Rice Humanitarian Board. I am grateful for his nutritional advice and instruction over the intervening years and for checking my calculations in connection with **Table 2**  and the surrounding text. I have known Dr. Guangwen Tang almost as long and thank her for providing, years ago, copies of the original documents which allowed me to construct with confidence the chronology of the IRB permissions 2003 and 2008 in the USA and China, all referring to the same NIH grant. Since 2015, the project has benefited from another specialist professional, Dr. Donald MacKenzie, who, aside from managing the GR2E regulatory data package generation, compilation and submissions, has also provided the web-links, which I have listed as footnotes in the 'Safety' section of this chapter. Thank you, Don, for your critically important work.
