1. Citrus Research International, Nelspruit, South Africa
2. Department of Plant Pathology, Stellenbosch University, Stellenbosch, South Africa
3. Department of Genetics, Stellenbosch University, Stellenbosch, South Africa
4. Agricultural Research Council – Plant Protection Research, Pretoria, South Africa
5. Instituto de Investigação Agronómica, Chianga, Huambo, Angola
6. PlantCare, Quarto C, Luanda, Angola