Roll, G. R., Ma, S., Gasper, W. J., Patti, M., Way, L. W., & Carter, J. (2010). Excellent outcomes of laparoscopic esophagomyotomy for achalasia in patients older than 60 years of age. Springer-Verlag.

Roll, Garrett R., Sandi Ma, Warren J. Gasper, Marco Patti, Lawrence W. Way, och Jonathan Carter. Excellent Outcomes of Laparoscopic Esophagomyotomy for Achalasia in Patients Older Than 60 years of Age. Springer-Verlag, 2010.

Roll, Garrett R., et al. Excellent Outcomes of Laparoscopic Esophagomyotomy for Achalasia in Patients Older Than 60 years of Age. Springer-Verlag, 2010.