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Randomized trial of needlescopic versus laparoscopic cholecystectomyCHEAH, W. K; LENZI, J. E; SO, J. B. Y et al.British journal of surgery. 2001, Vol 88, Num 1, pp 45-47, issn 0007-1323Article

Benign duodenal tumorsCHONG, K. C; CHEAH, W. K; LENZI, J. E et al.Hepato-gastroenterology. 2000, Vol 47, Num 35, pp 1298-1300, issn 0172-6390Article