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Copyright ©2006 Baishideng Publishing Group Co.
World J Gastroenterol. Dec 28, 2006; 12(48): 7844-7847
Published online Dec 28, 2006. doi: 10.3748/wjg.v12.i48.7844
Math 1
Math 1 Math 1
Math 2
Math 2 Math 2
Figure 1
Figure 1 Distribution of study population by gender in the three GOP clinics.