mr. pickens if -- that's just a thought. maybe we have sort of a built-in, you know, test here. >> a double blind study? >> president chow: it's not quite double blind but one -- you know, several clients are using one process to try to meet your measurements and others are, you know, not using that process. i'm just wondering if there's any possibility of trying to understand the difference that might occur because one is using lean and one is not? >> thank you for that question. i apologize for not being at that presentation earlier. i was in another meeting so i wasn't there to hear about these different cohorts. so all the clinics within primary care are using the same metrics and they have gone through the lean training so i need to find out more about what this is about the different scheduling of the cohorts because to my knowledge all of them have gone through their lean training so i need to delve into that a little bit more to understand how that got reported to you. >> president chow: okay. maybe i'm misunderstand