Talaie, R.; Forootan, M.; Donboli, K.; Dadashzadeh, N.; Sadeghi, A.; Poorsaadat, S.; Moghimi, B.; Houshang, A.; Alizadeh, M.; Zali, M. R. 24-Hour Ambulatory PH-Metry in Patients With Refractory Heartburn: A Prospective Study. JGLD 2009, 18, 11-15.