It has decided to immediately take any child with a head or neck injury out of the game, and to require a doctor's note to allow that child to play again.
The British doctor, whose work inspired the movie Awakenings as well as Harold Pinter's play A Kind of Alaska, is still seeing patients in his adopted home of New York.
At first glance it's a thriller, a "Gaslight"-type play about a 20-something doctor (Greg Keller) who appears to be keeping secrets from his increasingly anxious wife (Maria Dizzia).