1. Morquio disease presenting as hydrops fetalis and enzyme analysis of chorionic villus tissue in a subsequent pregnancy;Applegarth;Pediatr Pathol,1987
2. Clinical, radiological, morphological and biochemical data on fetal congenital lethal hypophosphatasia;Burck;Prog Clin Biol,1982
3. Ultrasonography in Obstetrics and Gynecology;Callen,1988
4. Birth prevalence of skeletal dysplasia in the Italian multicenteric monitoring system for birth defects;Camera,1982