Let me just quote from the email:
The Translation and Communications Interest Group is sponsoring a Twitter chat with Dr. Austin Frakt on Wednesday, February 25 from 2 – 3 p.m. ET. Dr. Frakt is the lead author of the 2013 HSR Article of the Year, Plan–Provider Integration, Premiums, and Quality in the Medicare Advantage Market. This study is the basis for the 2015 Student Competition: Presenting Research in Compelling Ways, which will be held during a special session at the Annual Research Meeting in Minneapolis on June 15, 2015. Dr. Frakt will answer questions from students related to his work and the competition, using the #ARMStudent hashtag.
More about the competition here. The article is ungated (through March) here. I blogged about it here and here.