Expression of secretory mucins in the human upper gastrointestinal tract : the role of MUC5AC in the adhesion of Helicobacter pylori / Jeroen Henricus Bernardus van de BovenkampExpression of secretory mucins in the human upper gastrointestinal tract : the role of MUC5AC in the adhesion of Helicobacter pylori / Jeroen Henricus Bernardus van de BovenkampExpression of Secretory Mucins in the Human Upper Gastrointestinal Tract : The Role of MUC5AC in the Adhesion of Helicobacter Pylori / Jeroen Henricus Bernardus van de Bovenkamp