On April 24th of 2019, Dr. Dadvand, member of PERSIAN birth cohort's international advisory committee and member of INMA project (Spain), came to our institute. In this meeting, the primary investigator explained current status of PERSIAN birth cohort and the ongoing processes for different aspects of the study in Isfahan city. Then managerial and executive members of Isfahan, reported more details regarding the process of bio banking and number of participants. In this session, the current protocol for neurodevelopmental assessment was debriefed and some suggestions for enrichment of the protocol were debated as well. At the end, Dr. Dadvand discussed about possible sub studies during the main study and he proposed some suggestions to better assessment of environmental effects on health for the project.