Participatory methods for risk analysis of informally marketed livestock products in sub-Saharan Africa: Advantages and challenges - Makita, K.; Kang'ethe, Erastus K.; Zewde, G.; Kurwijila, Lusato R.; Matusse, H.; McCrindle, C.M.E.; Tano-Debrah, K.; Bonfoh, Bassirou; Costard, Solenne; Baker, Derek; Grace, Delia (International Livestock Research Institute, 2011)