debate whether organ sales legalized may heated one one solution kidney shortage dissipated gaining appeal kidney swaps taking cue success achieved paired exchange programmes us netherlands britain india planning take in idea swapping kidneys may sound strange makes perfect sense hoi polloi willing give gift life loved one healthy someone safely give kidney family members always compatible blood tissue relatives want donate tally kidney exchanges families help patients avoid long waits transplant inclination severe decline health often occurs people dialysis years first kidney swap performed johns hopkins hospital baltimore since many performed united states of america admit swaps involved three families recipient insurance usually pays donor carefully choreographed meet two conditions families meet even have intercourse one another names beforehand cognitive operation done time make sure one backed sexual union done computing device computer scientists created algorithm able sort kidney yoke taking mammoth task coordinating paired donation algorithm cypher efficient way exchange kidneys resulting multiple possible combinations example donor would donate patient b donor b would give kidney patient c donor c would go patient four swaps last donor would give organ patient already seen first successful kidney swap june two mumbai families met dialysis room swapped stories decided swap kidneys gujarati businessman dayal bhanushali vashi resident got kidney naval forces employee sayeed mohammed dayal wife damayanti donated one kidney wife shameen four operations two retrievals two transplants took place back back jaslok infirmary june swap story india mo attempt donation earlier endeavor chandigarh april ended tragedy recipients failing make