Rapid Communication
Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. Apr 7, 2008; 14(13): 2061-2064
Published online Apr 7, 2008. doi: 10.3748/wjg.14.2061
Figure 1
Figure 1 Graduation of visibility concerning occurrence of foam. A: Excellent; B: Good; C: Limited; D: Poor visibility.