Peter Beyer headed a research group at University of Freiburg, Germany, with a strong focus on improving the nutritional value of crop plants. Ingo Potrykus worked at ETH Zurich, Switzerland, with a research group using genetic engineering technology applied to "food security" crops in developing countries. Adrian Dubock designed the international collaboration, and its governance, for turning the results of the Potrykus and Beyer teams into a useful product – Golden Rice - to combat vitamin A deficiency, a long-standing objective which all three share. Potrykus is the Chair of the Golden Rice Humanitarian Board, Beyer and Dubock are Board members, and Dubock is also the Executive Secretary of the Board. In common with other Board members, all three are unpaid volunteers.