Helm, J.R., McLauchlan, G., Boden, L.A., Frowde, P.E., Collings, A.J., Tebb, A.J., Elwood, C.M., Herrtage, M.E., Parkin, T.D.H. and Ramsey, I.K. (2011) A comparison of factors that influence survival in dogs with adrenal-dependent hyperadrenocorticism treated with mitotane or trilostane. Journal of Veterinary Internal Medicine, 25(2), pp. 251-260. (doi: 10.1111/j.1939-1676.2011.0696.x)