These listings are not actually allowed as they are not selling anything and sadly they are very unlikely to result in a positive outcome. All you can do is to keep a regular search going on eBay and other sites such as Gumtree and Loot to see if the stuff is ever listed for sale there
It's probably better to get this kind of theft in the local news, using social media etc although I'd still not be confident in any kind of positive outcome.
If you think that people are willing to steal from sick chidren and hospitals without anyone coming forward to say they know who did it, I'd really fear there's not a lot of hope for something of this calibre where money can be made so many times over.
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My body is an old warehouse full of declining storage, my mind is a dusty old reference library, strictly for members and archaeologists only