Retraction: Measurement and Analysis of Indoor Radon Concentration and its Influencing Factors in A University in Shanghai. Scientific Journal of Technology, [S. l.], v. 7, n. 1, p. 113–124, 2025. DOI: 10.54691/w5v93082. Disponível em: https://sjtechnology.org/index.php/ojs/article/view/14. Acesso em: 22 jun. 2026.