We thank all the co-authors for contributing to the project and paper including
Andrew Rosenberg, Ankur Bapna, Bhuvana Ramabhadran, Bo Li, Chung-Cheng Chiu, Daniel Park,
Françoise Beaufays, Gary Wang, Ginger Perng, James Qin, Jason Riesa, Johan Schalkwyk,
Ke Hu, Nanxin Chen, Parisa Haghani, Pedro Moreno Mengibar, Rohit Prabhavalkar, Tara Sainath,