1. Use of Phosphodiesterase 5 Inhibitors Is Associated With Lower Risk of Colorectal Cancer in Men With Benign Colorectal Neoplasms 
Wuqing Huang, Jan Sundquist, Kristina Sundquist, Jianguang Ji 
Gastroenterology 
Volume 157, Issue 3, Pages e4 (September 2019)
DOI: /j.gastro
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2. Supplementary Figure 1 A flowchart for the study population.
Gastroenterology  , e4DOI: ( /j.gastro )
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3. Supplementary Figure 2
Value of the joint minimal strength of association that an unmeasured confounder must associate with PDE5 inhibitor use and risk of CRC to fully explain the observed HR in our study.
Gastroenterology  , e4DOI: ( /j.gastro )
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