From May 11^th to 16^st, Dr. Eka Djatnika Nugraha and a student from Badan Riset dan Inovasi Nasional (BRIN), Indonesia, visited the Institute of Radiation Emergency Medicine (IREM). The purpose of this visit was to discuss the future competitive funding applications with the Department of Radiation Measurement and Physical Dosimetry, and conduct a joint research for heavy metal exposure with the Department of Radiochemistry and Radioecology and Department of International Cooperation and Collaborative Research. IREM have been deepening our cooperation with relevant organizations in Indonesia, and we will continue to maintain such cooperative relationships in order to achieve a comprehensive understanding of the health effects of radiation exposure and heavy metal exposure.