He was verbally abusive to students, never married, and had few professional collaborations.

Their professional collaboration and friendship lasted for two decades.

Their personal and professional collaboration is based on "mutual enthusiasm" as well as differences.

Thus began a long professional collaboration and friendship between the two.

But it was the beginning of a spectacular personal and professional collaboration.

He was also a student under professor Elizabeth Warren, which later developed into a professional collaboration.

However, aside from a screenplay that was never produced, this is their first professional collaboration.

Our primary mission is to improve the quality of compassionate care for people who are dying through public education and global professional collaboration.

The professional collaboration between Mullen and Stuart goes back a long way.

Their intense friendship and professional collaboration would continue until the end of her life.