Butt, Z., Parikh, N. D., Beaumont, J. L., Rosenbloom, S. K., Syrjala, K. L., Abernethy, A. P., . . . Cella, D. (2012). Development and Validation of a Symptom Index for Advanced Hepatobiliary and Pancreatic Cancers: The NCCN-FACT Hepatobiliary-Pancreatic Symptom Index (NFHSI).

Butt, Zeeshan, Neehar D. Parikh, Jennifer L. Beaumont, Sarah K. Rosenbloom, Karen L. Syrjala, Amy P. Abernethy, Al B. Benson, and David Cella. Development and Validation of a Symptom Index for Advanced Hepatobiliary and Pancreatic Cancers: The NCCN-FACT Hepatobiliary-Pancreatic Symptom Index (NFHSI). 2012.

Butt, Zeeshan, et al. Development and Validation of a Symptom Index for Advanced Hepatobiliary and Pancreatic Cancers: The NCCN-FACT Hepatobiliary-Pancreatic Symptom Index (NFHSI). 2012.