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. 2014 Aug 27;6(8):559–569. doi: 10.4254/wjh.v6.i8.559

Table 5.

Photodynamic therapy as an adjunct to biliary stenting: Improved survival

	Year	No. of pts	Median survival (mo)		P value
	Year	No. of pts	Stenting alone	Stenting with PDT
Ortner et al[56]	2003	39	3	16	P value	< 0.0001
Cheon et al[57]	2004	47	10	18	0.0143
Zoepf et al[58]	2005	32	7	21	0.0109

PDT: Photodynamic therapy.