Table 1: Summary of some previously published follow-up data.

YearStudyNumber of patientsMean length of follow-up (years)Mean age Recurrent CBDS (%)Total complications (%)

1996Bergman et al. [6]9414511424
Prat et al. [7]1569.7553.55.8

1997Wojtun et al. [1]3246.058.85.69.9

1998 Pereira-Lima et al. [8]2016.267.98.015.4
Sugiyama and Atomi [2]10314.2503.99.7
Tanaka et al. [9]41010.26410.712.3

2000Saito et al. [10]3717.765.49.720

2002Schreurs et al. [3]3106.2697.410
Costamagna et al. [4]4586.8639.211.1
Sugiyama and Atomi [5]13514.8498.911.9

2003Ando et al. [11]983npnp11.3np