On April 17th of 2019, an online meeting was held with the primary investigator and managerial and executive members of the PERSIAN Birth Cohort. In this meeting important executive challenges of the project were discussed and possible solutions to facilitate implementation of the project were debated. They also discussed about the suggested protocol for collecting biological samples and the general status of bio banking procedure was reported. In this meeting, new topics for possible sub studies during the main project were discussed as well.