Text and Data Mining valid from 2019-03-02
Received: 21 September 2018
Accepted: 22 February 2019
First Online: 2 March 2019
Compliance with ethical standards
: All authors declare no conflict of interest.
: The Institutional Ethics Committee was informed about ongoing study and the Committee stated no need for its approval. This study was part of the PhD thesis ‘Surgical anatomy of the pulmonary veins in humans’ of the first author.