Meet Erin: A 33-year-old mom of three from Minneapolis, Minnesota. She is living with metastatic breast cancer. Hear her story featured as part of the #ThisIsMBC Elements campaign brought to you by and in partnership with METAvivor, Eisai, & MBCinfocenter. To join the conversation, follow #ThisIsMBC on Twitter, Instagram and Facebook or go to MBCInfoCenter.com