PMC:3567831 / 14802-15018 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/3567831","sourcedb":"PMC","sourceid":"3567831","source_url":"https://www.ncbi.nlm.nih.gov/pmc/3567831","text":"Mean mitral regurgitation (MR) levels are scored as 0–4, to define no (0), mild (1), moderate (2), moderately severe (3) or severe regurgitation (4). NYHA class are scored as 1–4, to define classes I–V, respectively.","tracks":[]}