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BMC Pulmonary Medicine > 2019 > 19 > 1 > 1-6
Der Internist > 2017 > 58 > 3 > 218-225
Monatsschrift Kinderheilkunde > 2015 > 163 > 12 > 1241-1245
International Journal of Pediatric Otorhinolaryngology > 2007 > 71 > 2 > 241-246
International Journal of Pediatric Otorhinolaryngology > 2005 > 69 > 9 > 1269-1274