Links[1] https://www.ctsnet.org/user/login?destination=user/434119 [2] https://www.ctsnet.org/print/home/lhthomas [3] https://www.ctsnet.org/article/trap-door-technique-adult-cardiac-surgery [4] https://www.ctsnet.org/articles/lhthomas [5] https://www.ctsnet.org/society/ctsnet