While reviewing the results of the 2018 match I noticed that of the 96 neonatology/perinatology programs that 22 programs didn't fill all their spots for a total of 34 unfilled positions. My first thoughts were that these were lesser programs and/or undesirable locations. To my surprise I found programs such as UCSF, Childrens National, NYU, Cornell NYP, and others going unfilled. I couldn't come up with a reason that made any sense and was wondering what could be the reason that these and other programs that would seem from the outside to be desirable going unfilled.