Keller Rohrback L.L.P. Announces Investigation of Harmful Side Effects Associated With Beyaz, Safyral, Yasmin, and Yaz Birth Control Pills SEATTLE, April 13, 2012 (GLOBE NEWSWIRE) -- Attorney Advertising. Keller Rohrback L.L.P. (www.krcomplexlit.com/investigations/beyaz-safyral-yasmin-and-yaz-birth-control-pills">www.krcomplexlit.com)...