很多不抽烟得肺癌的,是否说明肺癌和吸烟没有因果关系?
本帖于 2014-10-02 17:31:38 时间, 由普通用户 happycow222 编辑
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy