He/She Is a Great Surgeon, But...

Memorial for Dr. Seyed Taghi Nourbakhsh, a Great Orthopedic Surgeon and a Nice Colleague

Dr. Seyed Taghi Noorbakhsh died in a tragic car accident on Nov 15th 2018, while on an official mission in Golestan Province in Iran. There is a great emptiness left by Dr.Noorbakhsh’s passing. He will be missed by his colleagues andthousands of his patients whom he helped during his career.In addition to being a board member of Iranian Orthopedic Association (IOA), for consecutive terms & Chie...

My mommy is a surgeon.

Identity Crisis: Who Is a Vascular Surgeon?

Chris Barnard--a personal tribute to a gifted heart surgeon and a great intellect.

To the Editor: Donald McRae’s failure to adequately acknowledge Barnard’s brilliance, leadership and great contributions in his book entitled Every Second Counts: The Race to Transplant the First Human Heart1 is disappointing. This and Peter Folb’s thoughtful and well-researched ‘Special Review’ on the book2 led me to document some of my personal experiences with Barnard in the 40th anniversary...

Behind Every Great Tree is a Great (Phylogenetic) Network

In Francis and Steel (2015), it was shown that there exists non-trivial networks on 4 leaves upon which the distance metric affords a metric on a tree which is not the base tree of the network. In this paper we extend this result in two directions. We show that for any tree T there exists a family of non-trivial HGT networks N for which the distance metric dN affords a metric on T . We addition...