Rueff Rato, I., J. Rigor, P. Ferreira, J. Laranjinha, G. Santos Silva, and D. Martins-Mendes. “Investigating Febrile Polyserositis: An Unusual Case of Idiopathic Hypereosinophilic Syndrome”. European Journal of Case Reports in Internal Medicine, vol. 8, no. 4, Apr. 2021, doi:10.12890/2021_002426.