![Relative frequencies of symptoms and risk factors among patients with chronic rhinosinusitis with nasal polyps using a case-control study]()
Relative frequencies of symptoms and risk factors among patients with chronic rhinosinusitis with nasal polyps using a case-control studyBohman, Anton; Oscarsson, Martin; Holmberg, Kenneth; Johansson, Leif; Millqvist, Eva; Nasic, Salmir; Bende, Mats · Acta Oto-Laryngologica · 2018