Evaluation of serum thymidine kinase 1 activity as a biomarker for treatment effectiveness and prediction of relapse in dogs with non‐Hodgkin lymphoma oleh Pierre Boyé, Franck Floch, François Serres, Kévyn Geeraert, Pierre Clerson, Xavier Siomboing, Mattias Bergqvist, Gabriel Sack, Dominique Tierny