title: Exertional dyspnea and headache in a 16-year-old girl.
authors.affiliation: Department of Medicine, State University of New York, Syracuse.
authors.forename: P P
authors.initials: PP
authors.lastname: Litam
authors.forename: T P
authors.initials: TP
authors.lastname: Loughran
mesh_terms: D000293:Adolescent; D004417:Dyspnea / Q000209:etiology*; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D005082:Physical Exertion; D013920:Thrombocythemia, Essential / Q000150:complications* / Q000188:drug therapy