@article {14293,
	title = {Examining user roles in social Q\&A: The case of health topics in Zhihu. com},
	journal = {Proceedings of the Association for Information Science and Technology},
	volume = {53},
	year = {2016},
	pages = {1-6},
	publisher = {Wiley Online Library},
	isbn = {2373-9231},
	author = {Wang, Zhe and Zhang, Pengyi}
}
