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* 1. Please list your last name and zip code:

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* 2. What is your specialty?

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* 3. How many patients with colorectal cancer do you treat each week?

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* 4. True or False: In a patient with known Lynch syndrome, it is unnecessary to test tumors for microsatellite instability/mismatch repair deficiency.

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* 5. In a patient with colon cancer and loss of MLH1/PMS2 by IHC, which subsequent genomic finding would most likely convince you of sporadic dMMR?

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