title: Picture quiz. Something's in the air.
authors.affiliation: Leeuwarden Medical Centre, Department of Medicine, PO Box 888, 8901 BR Leeuwarden, Netherlands. martin.de.borst@znb.nl
authors.forename: Martin H
authors.initials: MH
authors.lastname: de Borst
authors.forename: Marjolein E M
authors.initials: ME
authors.lastname: Lacor
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000369:Aged, 80 and over; D000388:Air; D001660:Biliary Tract Diseases / Q000175:diagnosis*; D003248:Constipation / Q000209:etiology; D005260:Female; D006801:Humans; D009325:Nausea / Q000209:etiology; D014839:Vomiting / Q000209:etiology