He thinks about kidney transplantation from a number of different angles...here's a snippet.
Is It Ever OK to Sell (or Buy) a Kidney?
"Iran’s paid kidney market emerged after the country’s revolution at the end of the 1970s. In the early ’80s, foreign sanctions against the government inhibited its ability to get dialysis machinery. The number of Iranians needing a kidney transplant, however, kept increasing, so in 1988 the government organized a system that regulated and funded kidney transplantation. Their system included compensation for donors.