1. Rothman SS (1977) The digestive enzymes of the pancreas: a mixture of inconsistent proportions. Ann Rev Physiol 39:373–389
2. Schmitz J (2004) Maldigestion and malabsorption. In: Walker WA, Goulet O, Kleinman RE, Sherman PM, Shneider BL, Sanderson IR (eds) Pediatric Gastrointestinal Disease: Pathophysiology, Diagnosis, Management. Decker, Hamilton, Canada, pp 8–20
3. Bohak Z (1969) Purification and characterization of chicken pepsinogen and chicken pepsin. J Biol Chem 244:4638–4648
4. Tabeling R, Gregory P, Kamphues J (1999) Studies on nutrient digestibilities (pre-caecal and total) in pancreatic duct ligated pigs and the effects of enzyme substitution. J Anim Physiol Anim Nutr 82:251–263
5. Gregory PC (1999) Growth and digestion in pancreatic duct ligated pigs. Effect of enzyme supplementation. In: Pierzynowski SG, Zabielski R (eds) Biology of the Pancreas in Growing Animals. Elsevier Science, New York, pp 381–393