Thirty Italian and 18 Spanish families with deafness were included in the study. They were recruited in several clinical genetics services and schools for the deaf from Southern Italy and Spain.

Purpose: Keratoconus is a corneal dystrophy with an incidence of 1 in 2000 and a leading cause for cornea transplantation in Western developed countries. Both clinical observations and segregation ...

Amyotrophic lateral sclerosis is a progressive neurologic disorder that commonly results in paralysis and death. Despite more than a century of research, no cause of, cure for, or means of preventing ...