I've almost finished The Girls, a novel about conjoined craniopagus twins. It's one of the many books that my Mum brought me when she came for a short stay last week. She had discussed this one at her reading group and although she enjoyed it, she felt that some of the detail wasn't quite right. Take this passage for example:
Our mother grunted and pushed. From anus. To clitoris. Her tissue tore.
"I was once a midwife," she told the group, "and that just isn't possible. Think about it."