发明授权
US3448188A Method and composition for use as an x-ray contrast material in the diagnosis of reflux peptic esophagitis 失效
使用X射线对比材料的方法和组合在REFLUX PEPIC ESOPHAGITIS诊断中的应用

Method and composition for use as an x-ray contrast material in the diagnosis of reflux peptic esophagitis
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