Efficacy and safety of sustained (48 hour) intravenous infusions of milrinone in patients with severe congestive heart failure: a multicenter study. - Anderson,J.L.; Baim,D.S.; Fein,S.A.; Goldstein,R.A.; LeJemtel,T.H.; Likoff,M.J. (J. Am. Coll. Cardiol., 1987)