TY - JOUR AU - Labenz, J; Jaspersen, D; Kulig, M TI - Risk factors for erosive esophagitis: a multivariate analysis based on the ProGERD study initiative JO - Am J Gastroenterol IS - 09 VL - 99 PY - 2004 DO - 10.1111/j.1572-0241.2004.30390.x SP - 1652 EP - 1656 N1 - et al. ER -