I wonder if this program is really that hard to get into... For last year's intake, there were 116 domestic applicants, and 62 of them received offers of admission (and subsequently 36 of those applicants accepted the offer). So it appears more than half of applicants get in. On the other hand, it appears you shouldn't waste time and resources applying if you're an international applicant.
source: https://issuu.com/dlsph/docs/dlsph_report_2016-17_final page 8