“…A number of alternative "push" (prior) and "pull" (ad-hoc and post-hoc) incentive mechanisms have been proposed to address the R&D gaps inherent in the market-based innovation paradigm (Hecht, Wilson and Palriwala, 2009). "Pull" mechanisms-such as advance market commitments (e.g., donor commitments to provide incentives to vaccine makers to produce vaccines for developing countries), prize funds, and expedited regulatory review (e.g., the FDA's Priority Review Vouchers, Accelerated Approval, and Fast-Track regulatory review)-reward R&D outcomes by facilitating commercialization of valuable but less profitable health products (Towse and Kettler, 2005;Love and Hubbard, 2007;Robertson, et al, 2012).…”