Explanation and elaboration document for the STROBE-Vet statement: strengthening the reporting of observational studies in epidemiology – veterinary extension

A. M. O'Connor^*, J. M. Sargeant, I. R. Dohoo, H. N. Erb, M. Cevallos, M. Egger, A.K. Ersbøll, S. W. Martin, Liza Rosenbaum Nielsen, D. L. Pearl, D. U. Pfeiffer, J. Sanchez, M. E. Torrence, H. Vigre, C. Waldner, M. P. Ward