Otitis media surgery: large variability between Finland and Norway.
Int J Pediatr Otorhinolaryngol. 2007 Jul;71(7):1035-9. doi: 10.1016/j.ijporl.2007.03.010. Epub 2007 May 4.
Int J Pediatr Otorhinolaryngol. 2007.
PMID: 17482284