Which of the following are considered to be imperfections in medical markets that keep markets from providing the socially optimal level of service? NOTE: Not all options are correct. Select only the options you believe correct. Selecting all options will result in a loss of points.

A.Increased efficiency of testing

B.Third-party insurers

C.Lack of price controls

D.Barriers to Entry

E.Yelp physician quality rankings

F.Lack of Price Transparency

G.Asymmetric information

H.Government subsidies to industry