Retrospective analysis of infections prevalence in patients with progressive systemic sclerosis treated with cyclophosphamide. Journal of Medical Science, Poznań, Poland, v. 84, n. 3, p. 152–156, 2015. DOI: 10.20883/medical.e12. Disponível em: https://horkruks.ump.edu.pl/index.php/JMS/article/view/12. Acesso em: 18 aug. 2025.