Oral vitamin K effectively treats international normalised ratio (INR) values in excess of 10. Results of a prospective cohort study.

Crowther, Ma; Garcia, D; Ageno, Walter; Wang, L; Witt, Dm; Clark, Np; Blostein, Md; Kahn, Sr; Schulman, S; Kovacs, M; Rodger, Ma; Wells, P; Anderson, D; Ginsberg, J; Selby, R; Siragusa, S; Silingardi, M; Dowd, Mb; Kearon, C.