Dr Sam Coulter Smith: “For a baby delivered at 23 weeks to survive is a huge achievement from everyone’s point of view. For a 23-week twin to survive is even bigger because twins often behave more prematurely than singleton babies.” Photograph: Cyril Byrne

The safe birth of twin girls 87 days apart is “truly extraordinary” and “a genuine good news story”, the master of Dublin’s Rotunda Hospital ha(...)