PPD $6000 23 night study with 1 opv Sept 24, 2015 11:52:57 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by adamdarat on Sept 24, 2015 11:52:57 GMT -5 PPD is screening for Cohort 2 for the 23 consecutive days study with 1 follow up starting Oct 5th . Who's done the first group here ?