Penell, J. C., Morgan, D. M., Watson, P., Carmichael, S., & Adams, V. J. (2019). Body weight at 10 years of age and change in body composition between 8 and 10 years of age were related to survival in a longitudinal study of 39 Labrador retriever dogs. BioMed Central. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6734441/

Penell, Johanna Christina, David Mark Morgan, Penny Watson, Stuart Carmichael, and Vicki Jean Adams. Body Weight At 10 Years of Age and Change in Body Composition between 8 and 10 Years of Age Were Related to Survival in a Longitudinal Study of 39 Labrador Retriever Dogs. BioMed Central, 2019.

Penell, Johanna Christina, et al. Body Weight At 10 Years of Age and Change in Body Composition between 8 and 10 Years of Age Were Related to Survival in a Longitudinal Study of 39 Labrador Retriever Dogs. BioMed Central, 2019.