Fig. 2From: Esophagus involvement in systemic sclerosis: ultrasound parameters and association with clinical manifestationsHis angle in SSc patients with GERDQ < 8 and GERDQ ≥ 8. Patients with GERDQ < 8 has a smaller His angle than patients with GERDQ ≥ 8, with a P value < 0.05. GERDQ, gastro-esophageal reflux disease questionnaire; His angle, the gastro-esophageal angleBack to article page