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;