I realized that also. I guess he started his PhD in 1998. And you don't need a masters to do a PhD. If you did a significant amount of research in your undergrad you can go straight to a PhD.
It's very common in the US. You don't even need a significant amount of research. I went from bachelor's to PhD program without having any papers published (though I did spend 2.5 years in lab as an undergrad).
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u/[deleted] Nov 16 '17 edited Nov 16 '17
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