Case Control Study
Copyright ©The Author(s) 2017.
World J Gastroenterol. Apr 28, 2017; 23(16): 2948-2956
Published online Apr 28, 2017. doi: 10.3748/wjg.v23.i16.2948
Figure 1
Figure 1 Flow chart for selecting cases and controls and identifying comorbidity and examinations.
Figure 2
Figure 2 Frequency and duration of the diagnosis of pyogenic liver abscess after the first upper gastrointestinal panendoscopy examination. PLA: Pyogenic liver abscess; UGI: Upper gastrointestinal.