目的：了解幽门螺杆菌(hp)在外环境的存活力，以及其流行病学意义。
To investigate survival ability of Helicobacter Pylori (HP) in the environment and its epidemiological implications.
目的：了解幽门螺杆菌(hp)在外环境的存活力，以及其流行病学意义。
To investigate survival ability of Helicobacter Pylori (HP) in the environment and its epidemiological implications.
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