5Ristikankare M,Hartikainen J,Heikkinen M,et al. The effects of genderand age on the colonoscopic examination. J Clin Gastroenntero J,2001,32( 1 ) : 69-75.
6Macarc F,Tan KG,Williams CB. Towards safer safer colonoscopy: a report onthe complication of 5000 diagnostic or therapeutic colonoscopies. Gut,1983,24: 376.
