Frisch & Simonsen (2016) carried out a very large-scale study in Denmark, which compared the incidence of<unk>  in Muslim males (mostly circumcised) with the incidence of<unk>  in ethnic Danish males (mostly non-circumcised). The risk of<unk>  in circumcised males was found to be as much 3.7 times higher than in the non-circumcised males.
Meatal stenosis
Nasal septum deviation
Laryngotracheal stenosis
Laryngomalacia
Subglottic stenosis
Perforated eardrum
Hiatal hernia
Velopharyngeal insufficiency