21.   Dusit indicated that an operation was not imminent, but said medical theory holds that Siamese twins should be separated within two months of birth.

22.   Dr. Keith Goh said efforts to separate twins joined at the head have been conducted only four other times in the world, and only once successfully.

23.   Surgeons began a lengthy operation Monday to separate conjoined twins whose fate had been the subject of a legal battle.

24.   This could influence the timing of surgery to separate the twins, but there was no immediate crisis, he said.

25.   Doctors have successfully separated Siamese twins Monique and Donn Krige, who were joined at the stomach and shared a liver, South African radio reported Saturday.

26.   It was the first time Hoffman separated Siamese twins, an extremely rare operation.

27.   It was the first time that an operation to separate Siamese twins had been successful in Bangladesh.

28.   Operations to separate Siamese twins have been attempted in Bangladesh before but have never been successful.