RT Journal Article SR Electronic T1 Earlier decline in sniff nasal inspiratory pressure than peak expiratory flow in children with Duchenne muscular dystrophy JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1361 OP 1363 DO 10.1183/09031936.00043214 VO 44 IS 5 A1 Véronique Nève A1 Jean-Louis Edmé A1 Régis Matran YR 2014 UL http://erj.ersjournals.com/content/44/5/1361.abstract AB