The conclusion is that pneumococci are correlative with recurrent aphthous ulcers and their pathogenesis has also been discussed.
认
链球菌与复发性阿弗他溃疡有关，并进一步讨论了链球菌
致病机制。
双球菌The conclusion is that pneumococci are correlative with recurrent aphthous ulcers and their pathogenesis has also been discussed.
认链球菌与复发性阿弗他溃疡有关，并进一步讨论了链球菌致病机制。
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