Fleming A, Olson JA, Sharp PF, Goatman KA, Philip S. Response to 'Improved automated screening of diabetic retinopathy' by Carlos M. Oliveira et al. Ophthalmologica. 2012 Jan 1;227(3):173. doi: 10.1159/000334922
Brodtkorb T, Kogler GF, Arndt A. The influence of metatarsal support height and longitudinal axis position on plantar foot loading. Clin Biomech (Bristol, Avon). 2008;23(5):640-7.