Complex sentence: Chandak is a specialist registrar in transplant surgery at Guy's, St Thomas and Great Ormond Street Hospital and a research fellow under Professor Nizam Mamode at King's College London.
Split into simpler sentences: Chandak is a specialist registrar in transplant surgery, working at Guy's, St Thomas and Great Ormond Street Hospital. He is also a research fellow under Professor Nizam Mamode at King's College London.