Vydiswaran, V. G., Yang Liu, Kai Zheng, David Hanauer, and Qiaozhu Mei. 2014. “User-Created Groups in Health Forums: What Makes Them Special?”. Proceedings of the International AAAI Conference on Web and Social Media 8 (1):515-24. https://doi.org/10.1609/icwsm.v8i1.14510.