To identify popular and relevant questions, Twitter is developing a number of ways to identify the most common and representative questions.

WHITEHOUSE: Press Briefing

The three studies will constitute a representative sample of common and specific mechanisms related to the social movement of women and gender-based violence in West Africa.

UNESCO: MEDIA SERVICES

According to the singer's representative, Crow was diagnosed with meningioma, a common type of brain tumor.

CNN: Sheryl Crow: Brain tumor is a 'bump in the road'

Stemline has granted the representative of the underwriters a 45-day option to purchase up to 497, 647 additional shares of common stock from Stemline to cover over-allotments, if any.

FORBES: Stemline Therapeutics Announces Pricing of IPO