Langerhans cell histiocytosis. Advances in pathogenesis and clinical practice Itziar Astigarraga; Susana García-Obregón; Antonio Pérez-Martínez; Ignacio Gutiérrez-Carrasco; Vicente Santa-María; Carmen Rodríguez-Vigil Iturrate; Mikael Lorite Reggiori; Thais Murciano Carrillo; Montse Torrent;

Respiratory syncytial virus infections requiring hospitalization in patients with primary immunodeficiency Luis Ignacio González-Granado; Andrea Martín-Nalda; Laia Alsina; Olaf Neth; Manuel Santamaría; Pere Soler-Palacín;

Familial lymphohistiocytosis, the importance of recognizing the infrequent Sara Pons Morales; Carmen Carreras Gil de Santivañes; Miguel Ángel Gallego Ferrer;