Spawn by Shaun Hutson
Ah Spawn. Sadly nothing to do with Todd McFarlane’s superhero and a lot to do with aborted fetuses.
I went through/am still going through a phase of reading only the pulpiest, filthiest horror I could get my hands on. Spawn is about a crazed, but loving childless doctor who rescues the miraculously surviving aborted fetuses from his hospital and raises them from what I think was a swamp to become literal little monsters.
I have this sense of regret that I never read Slugs, so I’m not sure whether there is a link beyond the font, but I hope that there was. There’s nothing I like more than a faint Stephen King-esque link between books from the same author.