Table 1:

Treatment groups

Duration	Number of Subjects
	PEG-I		PEG-B		PPG-B
	Bifurcation	Elastase	Bifurcation	Elastase	Bifurcation	Elastase
2 Weeks	0	1	0	3	0	3
6 Weeks	0	2	0	4	0	3
10 Weeks	0	2	0	3	0	3
26 Weeks	3	4	2	0	2	0
Total	3	9	2	10	2	9

Note:—PEG-I indicates polyethylene glycol opacified with aromatic iodine; PEG-B, polyethylene glycol opacified with barium sulfate; PPG-B, polypropylene glycol opacified with barium sulfate.