Kalua, K; Ng'Ongola, RT; Mbewe, F; Gilbert, C; (2012) Using primary health care (PHC) workers and key informants for community based detection of blindness in children in Southern Malawi. Human resources for health, 10. ISSN 1478-4491 DOI: https://doi.org/10.1186/1478-4491-10-37