Fig. 3From: The ChoCO-W prospective observational global study: Does COVID-19 increase gangrenous cholecystitis?Box-and-whiskers plot of gall bladder wall thickness (mm) in the COVID and the non-COVID patients who had total or partial cholecystectomy. The box resembles the 25th percentile and the 75th percentile interquartile range (IQR), while the line within the box resembles the median. p value = Mann–Whitney U testBack to article page