Overview Lansoprazole in Preterm Infants With Gastroesophageal Reflux (GER) Status: Completed Trial end date: 2014-07-01 Target enrollment: Participant gender: Summary This study is crossover study to evaluate safety and efficacy of lansoprazole in preterm infants with gastroesophageal reflux. Phase: Phase 1/Phase 2 Details Lead Sponsor: Seoul National University HospitalTreatments: DexlansoprazoleLansoprazole