(CNN)When Dr. Swaiman Singh boarded a flight to India last December, he thought he would be there for a week, tops.
Back home in New Jersey, life for the 34-year-old was "literally perfect."
His career was taking off, with just a few months left in a three-year cardiology fellowship at Newark Beth Israel Medical Center and another prestigious opportunity lined up after that. He was a husband to a similarly ambitious wife and a father to a two-year-old daughter. He had the support of his parents and sister, who lived just a short car ride away.
Then, Singh got word that a close family friend from his ancestral village in Punjab, India -- someone like a grandfa