Revision of the taxonomic status of Synthesium elongatum (Ozaki, 1935) (Brachycladiidae), an intestinal digenean of narrow-ridged finless porpoise (Neophocaena asiaeorientalis) - Shiozaki, A.; Amano, M.; Fernández, M.; Fraija-Fernández, N. (Journal of Veterinary Medical Science, 2019)