On May 26th of 2020, an online meeting was held with the primary investigator and managerial and executive members of the PERSIAN Birth Cohort. In this meeting, the process for detecting the exact home address of the participants was debated. Then, the effects of COVID-19 on the study process was discussed and some sub-studies related to COVID-19 were explained. At last, all locals presented a brief report on the status of the project in their region.