21.   He had emphysema and died of respiratory failure, said his editor, Edward Foster.

22.   He died about seven hours after surgery due to acute respiratory failure.

23.   He died of respiratory failure after surgery, said his wife, Virginia.

24.   He died of respiratory failure at the Haarlem Hospital in Haarlem, the Netherlands, where he had surgery, his son John said.

25.   He suffered facial burns and went into heart and respiratory failure.

26.   Her death certificate said she died of respiratory failure and listed salmonella poisoning and bronchitis as underlying causes of death.

27.   Her family said the cause of death was respiratory failure.

28.   His family said the cause of death was respiratory failure.

29.   His family said the cause was respiratory failure.

30.   His office said he died of respiratory failure while convalescing from a stomach operation last month.