BOR, Serhat, Ömer ÖZÜTEMİZ, Ahmet MUSAOĞLU, and Hanefi ÇAVUŞOĞLU. 2000. “Effect of Botulinum Toxin Injection and Pneumoticdilatation on Lower Esophageal Sphincter in Achalasia”. Turkish Journal of Gastroenterology 11 (1):6-12. https://turkjgastroenterol.org/index.php/tjg/article/view/1035.