📁 群组
These groups, communities, or meeting places provide an opportunity for people with a common experience (such as a condition or disease, or a care-giving role) to share their concerns, and to seek and offer information and advice.
子分类
条目 (16+)
Other Studies Support EPA on Secondhand Smoke
http://www.washingtonpost.com/wp-srv/national/longterm/tobacco/stories/secondhand072098.htm
OncoLink: Environmental Tobacco Smoke
http://www.oncolink.org/library/article.cfm?c=2&s=34&id=479