Links
[1] https://www.ctsnet.org/user/login?destination=user/535771
[2] https://www.ctsnet.org/print/home/casper
[3] https://www.ctsnet.org/article/extended-thymectomy-en-bloc-left-upper-lobectomy-combined-vats-and-sternotomy-approach
[4] https://www.ctsnet.org/articles/Casper
[5] https://www.ctsnet.org/society/ctsnet