Length rather than a specific allele of dinucleotide repeat in the 5′ upstream region of the aldose reductase gene is associated with diabetic retinopathy. - Fujisawa,T.; Ikegami,H.; Kawaguchi,Y.; Yamato,E.; Nakagawa,Y.; Shen,G.Q.; Fukuda,M.; Ogihara,T. (Diabet Med, 1999)