1. References Barriers to entry, brand advertising, and generic entry in the us pharmaceutical industry;International Journal of Industrial Organization,2000
2. Fed up with drug companies, hospitals decide to start their own;R Abelson;The New York Times,2018
3. Inference for parameters defined by moment inequalities using generalized moment selection;D W Andrews;Econometrica,2010
4. more entrants in about 43 markets. If their aggregate effect is like the impact of observed entry, reported in column 1, we can add $143 million. Then the total benefit to consumers is about $618 million-very close to the $596 million reported in the third column. Moreover, if we repeat this exercise but reduce delays by two years, then we arrive at roughly $1.32 billion, which is also near the $1.52 billion reported in the fourth column. 56 Obviously, there are important caveats to this conclusion, including ensuring product quality;J Asker;American Economic Review,2010