Complex sentence: He is a former professor at the Department of Cardiothoracic Surgery of the Institute of Medical Sciences, Banaras Hindu University, and after his retirement in 2003, he was made the professor emeritus of the institution.
Split into simpler sentences: He is a former professor at the Department of Cardiothoracic Surgery of the Institute of Medical Sciences, Banaras Hindu University. After his retirement in 2003, he was made the professor emeritus of the institution.