Passage: Rösler was born in Khánh Hung, Ba Xuyên Province, in South Vietnam (now Sóc Trăng Province, Vietnam) on 24 February 1973. No information regarding Rösler's Vietnamese birth parents is known. He was adopted from a Roman Catholic orphanage near Saigon by a German couple who already had two biological children, and brought to Düsseldorf, West Germany, in a plane of children's rights charitable humanitarian organization Terre des Hommes at the age of nine months. He was raised by his adoptive father, who is a career military officer, after the couple separated when he was four years old.Rösler grew up in Hamburg, Bückeburg and Hanover, where he graduated from high school in 1992. After training to become a combat medic in the German Bundeswehr (the Federal Defence Force), Rösler was accepted to study medicine at the Hanover Medical School. Following this, he continued his education at the Bundeswehr hospital in Hamburg. He earned his Doctorate in cardiothoracic surgery in 2002. He left the service as a Stabsarzt (a rank for German medical officers equivalent to an army captain) in 2003.

Question: After working as a compbat medic, Rosler moved on to study where?
the Bundeswehr hospital in Hamburg