Elashoff, M.; AV. Matveyenko; B. Gier; R. Elashoff; PC. Butler (julio de 2011). «Pancreatitis, pancreatic, and thyroid cancer with glucagon-like peptide-1-based therapies.». Gastroenterology141 (1): 150-6. doi:10.1053/j.gastro.2011.02.018. PMID 21334333.
Elashoff, M.; AV. Matveyenko; B. Gier; R. Elashoff; PC. Butler (julio de 2011). «Pancreatitis, pancreatic, and thyroid cancer with glucagon-like peptide-1-based therapies.». Gastroenterology141 (1): 150-6. doi:10.1053/j.gastro.2011.02.018. PMID 21334333.