Fig. 3From: Assessing the genetic relationship between gastroesophageal reflux disease and chronic respiratory diseases: a mendelian randomization studyMendelian randomization associations between genetically predicted gastroesophageal reflux disease and 12 potential risk factors. Obesity class 1, BMI: 30-34.9 kg/m2; Obesity class 2, BMI: 35-39.9 kg/m2; Obesity class 3, BMI: ≥ 40 kg/ m2Back to article page