Britt, J.S., Berry, S.L., Shearer, J., Hemling, T., Steevens, B. and Dreher, M. 1999. A Uniform protocol for evaluating response to treatment of papillomatous digital dermatitis lesions. The Bovine Practitioner. 33, 2 (May 1999), 149–154. DOI:https://doi.org/10.21423/bovine-vol33no2p149-154.