Well that was a retorical question, but it's easy to determine.
Pool of 10 kids, every one is unique. Getting that particular one means you have a 10% chance. Having that particular one in the boot (1 out of 4 slots, i.e. 25%) drops the % down to 1/4th of 10%, which means 2.5% chance of getting Dmitry in the damn boot slot (or any other particular baby in a particular spot).
LOL @ dwarven abortion clinic, I can just imagine how that would look.