TY - JOUR T1 - Snoring or bubbling? JF - European Respiratory Journal JO - Eur Respir J SP - 693 LP - 693 DO - 10.1183/09031936.93.02070693 VL - 2 IS - 7 AU - E Lens Y1 - 1989/07/01 UR - http://erj.ersjournals.com/content/2/7/693.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -