Wang, Lucy Xiaolu MPI for Innovation and Competition, Max Planck Society;
https://ssrn.com/abstract=3762548 (Preprint)
Epstein, J., Nicholson, S., Wang, L. X., Hempstead, K., & Asin, S. (2020). The Secret Menu in Health Care: A Cash Market for Imaging in California. INQUIRY: The Journal of Health Care Organization, Provision, and Financing. doi:10.1177/0046958020981449.