48-year-old Umesh Dedhia generally towers over most people. Over six feet tall, this shopkeeper from south-central Mumbai is all smiles sitting in the crowded waiting area of Nephrologist Dr Viswanath Billa's consultancy at Shushrut hospital in Chembur. "I have got a new lease of life," he tells with a big grin. "I could not have taken another day of Dialysis." Dedhia is a father of three. His world came crashing down when three years ago both his kidneys failed.