First, I need to confirm the details about Jan Hajto. He's a professor at the Medical University of Warsaw, right? He's done a lot on shoulder disorders and arthroscopic surgery. Now, about "Anteriores" – maybe that's a book or a series of articles. The user might be referring to a specific paper or a collection of his work.
First, I need to confirm the details about Jan Hajto. He's a professor at the Medical University of Warsaw, right? He's done a lot on shoulder disorders and arthroscopic surgery. Now, about "Anteriores" – maybe that's a book or a series of articles. The user might be referring to a specific paper or a collection of his work.