Thank you, Mr. Chair.
Thank you both for being here.
I want to pick up on a couple of things. David, first you talked about the effectiveness of the screening. As you know, effects can be delayed for a number of years and we've experienced that throughout. Did you find your screening effective? It sounds like you did. But do you think there should be a sort of mandated screening within the first six months? Should there be sort of a follow-up mandated screening every year for a couple of years, or some increased frequency?