title: "Cladribine improves lung cysts and pulmonary function in a child with histiocytosis." Ralph Epaud, Hubert Ducou Le Pointe, Sylvie Fasola, Sandra Ploussard, Celine Delestrain, Chiara Sileo and Jean Donadieu. Eur Respir J 2015; 45: 831-833.