1. Diseases of the exocrine pancreas during childhood;RJ, Stafford R.J.Grand,1988
2. Congenital pancreatic lipase deficiency;Sheldon, W.;Arch Dis Child,1964
3. Trypsinogen deficiency disease.7 Pediatr;Townes, P.L.,1965
4. Development of functional response in human exocrine pancreas;Lebenthal, E.; Lee, P.C.;Pediatrics,1980
5. Manual of paediatric gastroenterology;Tripp, J.H.; Candy, D.C.A.,1985