PT - JOURNAL ARTICLE AU - Luke Semrau TI - Understanding choice, pressure and markets in kidneys AID - 10.1136/medethics-2019-105781 DP - 2019 Sep 16 TA - Journal of Medical Ethics PG - medethics-2019-105781 4099 - http://jme.bmj.com/content/early/2019/09/16/medethics-2019-105781.short 4100 - http://jme.bmj.com/content/early/2019/09/16/medethics-2019-105781.full AB - Here, I briefly respond to a recent paper by Julian Koplin, in which he criticises my earlier work in this journal. I show that Koplin has misunderstood the distinction I have made between pressure to vend and pressure with the option to vend. I also show that his pessimism about the market regulations I favour is unwarranted.