Fig. 1From: Predictive values of the modified Mallampati test, upper lip bite test, thyromental distance and ratio of height to thyromental distance to predict difficult laryngoscopy in pediatric elective surgical patients 5–12 years old at selected Addis Ababa governmental hospitals, Ethiopia: a multicenter cross-sectional studyFlow diagram of proportional allocation and sampling technique of the participants. Data collection procedures and quality assuranceBack to article page