title: [Frequent users of hospital emergency departments].
authors.affiliation: Servicio de Urgencias, Hospital de la Princesa, Madrid, España.
authors.forename: Juan Mariano
authors.initials: JM
authors.lastname: Aguilar Mulet
authors.affiliation: Servicio de Urgencias, Hospital Clínico San Carlos, Madrid, España. Electronic address: cesareofa@hotmail.com.
authors.forename: Cesáreo
authors.initials: C
authors.lastname: Fernández Alonso
authors.affiliation: Servicio de Medicina Preventiva y Salud Pública, Hospital Clínico San Carlos, Madrid, España.
authors.forename: Manuel Enrique
authors.initials: ME
authors.lastname: Fuentes Ferrer
authors.affiliation: Servicio de Urgencias, Hospital Clínico San Carlos, Madrid, España.
authors.forename: Juan Jorge
authors.initials: JJ
authors.lastname: González Armengol
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005260:Female; D006761:Hospitals / Q000145:classification; D006801:Humans; D008297:Male; D000069342:Medical Overuse / Q000706:statistics & numerical data; D008875:Middle Aged; D017678:Sex Distribution; D013030:Spain; D055815:Young Adult