A grading system for direct laryngoscopy.
Levitan
R M
RM
Hollander
J E
JE
Ochroch
E A
EA
D005931:Glottis / Q000033:anatomy & histology; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods; D007828:Laryngoscopy / Q000379:methods*