Tadić, Valerija ORCID: 0000-0003-3982-0340 , Hamblion, Esther Louise, Keeley, Sarah, Cumberland, Phillippa, Lewando Hundt, Gillian and Rahi, Jugnoo Sangeeta (2010) ‘Silent Voices’ in health services research: Ethnicity and socioeconomic variation in participation in studies of quality of life in childhood visual disability. Investigative Opthalmology & Visual Science, 51 (4). pp. 1886-1890. ISSN 1552-5783 (doi:https://doi.org/10.1167/iovs.09-4522)