No abstract available
MeSH terms
-
Aged
-
Aged, 80 and over
-
Esophageal Diseases / chemically induced
-
Esophageal Diseases / pathology*
-
Hematemesis / etiology
-
Humans
-
Male
-
Polystyrenes / adverse effects*
-
Ulcer / chemically induced
-
Ulcer / pathology
Substances
-
Polystyrenes
-
polystyrene sulfonic acid