The Jack and Jill Foundation says it has grave concerns over the location of the new National Children's Hospital.
The charity - which cares for some of the country's sickest children - says the site of St James' in Dublin city centre is entirely inappropriate.
After over 20 years of work on the project - its latest incarnation is facing increased objections.
Jack and Jill CEO Jonathon Irwin will speak at a conference of the National Association of GPs this afternoon.
He's urging doctors to speak out against the planned location:
