1 Food and Nutrition Division of the Food and Agriculture Organization of the UN, Viale delle Terme di Caracalla, 00153 Rome, Italy. Electronic address: luana.swensson@fao.org.
2 Alliance of Bioversity International and the International Center for Tropical Agriculture, Maccarese (Fiumicino), Rome, Italy.
3 Graduate Program of Sociology and Rural Development, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
4 Food and Nutrition Division of the Food and Agriculture Organization of the UN, Viale delle Terme di Caracalla, 00153 Rome, Italy.