flu shot 有用吗

来源: ttt8966 于 2020-01-23 07:37:00 [旧帖] [给我悄悄话] 本文已被阅读：次

应不应该每年都打 flu shot?

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.