Anfinsen, K. P., Berghoff, N., Priestnall, S. L., Suchodolski, J. S., Steiner, J. M., & Allenspach, K. (2014). Urinary and faecal N-methylhistamine concentrations do not serve as markers for mast cell activation or clinical disease activity in dogs with chronic enteropathies. Acta Veterinaria Scandinavica, 56(90), https://doi.org/10.1186/s13028-014-0090-y