He attended Johns Hopkins University to study biomedical engineering and applied mathematics & statistics .
In his senior year , Mullen was a National Merit Finalist and fourth award winner at the Intel International Science and Engineering Fair for a team project with his future wife , Cathy Chen .
Mullen attended Johns Hopkins University to study biomedical engineering and applied mathematics & statistics .
In his senior year , Mullen was a National Merit Finalist and fourth award winner at the Intel International Science and Engineering Fair for a team project with his future wife , Cathy Chen .