Online PhD in Nursing through Duquesne University

I was talking to a guy today who mentioned that he was working on a master's degree online through Duquesne University. Curious, I looked up their programs and discovered that they have an online PhD in Nursing. There is a limited residency requirement. This is from their web site:

"Online students are required to be on campus for one week each spring (usually the second or third week of May) during the completion of their required coursework, a period that varies from 2-4 years. During that week, students meet with faculty advisors, attend lectures by visiting professors, participate in seminars for required courses, complete examinations, and participate in program evaluation."

http://www.distancelearning.duq.edu/prospective/programs.cfm

http://www.nursing.duq.edu/gradPhD.html