Intraarterial thrombolysis of lower extremity occlusions: a prospective, randomized comparison of forced periodic infusion and conventional slow continuous infusion - Kandarpa, K; Chopra, PS; Aruny, JE; Polak, JF; Donaldson, MC; Whittemore, AD; Mannick, JA; Goldhaber, SZ; Meyerovitz, MF (Radiology, 1993)