Can lansoprazole, amoxicillin, and clarithromycin combination still be used as a first-line therapy for eradication of helicobacter pylori? - GÜLİTER, Sefa; KELEŞ, Hatice; ÖZKURT, Zübeyde Nur; CENGİZ, Derya U.; KOLUKISA, Emre (Turkish Journal of Gastroenterology, 2005)