Assertion: antiarrhythmic drug | /r/HasProperty | modified by harrison2 table 1
Facets:
value: subsequently
type: TEMPORAL
Source sentences:
text: For almost a quarter of a century, antiarrhythmic drugs have been differentiated by their antiarrhythmic action according to the well-known classification system developed by Vaughan Williams1 and subsequently modified by Harrison2 (Table 1).