NCT04716166 2021-10-20Incentive Spirometry and Upper Abdominal Laparoscopic SurgeryRiphah International UniversityPhase NA Completed60 enrolled
NCT00872755 2009-03-31Nissen and Gastroplasty in Gastroesophageal Reflux Disease (GERD)G. Hatzikosta General HospitalPhase 4 Completed90 enrolled