RT Journal Article SR Electronic T1 Novel homozygous mutation in the alpha subunit of the rod cGMP gated channel (CNGA1) in two Spanish sibs affected with autosomal recessive retinitis pigmentosa JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP e66 OP e66 DO 10.1136/jmg.39.10.e66 VO 39 IS 10 A1 E Paloma A1 A Martínez-Mir A1 B García-Sandoval A1 C Ayuso A1 L Vilageliu A1 R Gonzàlez-Duarte A1 S Balcells YR 2002 UL http://jmg.bmj.com/content/39/10/e66.abstract AB