Thanks to James and Liang-chih for writing the post and Ed, Fabrice, and Joe for editing.
Below are some proposed social media messages. Please tweak as needed.
Twitter (@wikimedia/@wikipedia):
• Making Wikipedia's medical articles accessible in Chinese: a successful collaboration. (link)
Facebook/Google+
• Medical content on the Chinese Wikipedia was both increased and improved by a collaboration between Wikimedia Taiwan, Wikiproject Medicine, and a Taipei medical school. As a result, a wide range of medical articles were translated into Chinese, while introducing students to Wikipedia editing. (link)