"One of the commoner causes of sudden death is a pulmonary embolism that may occur a week to ten days later after a thrombosis formed, " Lord says.

CNN: Deep vein thrombosis explained

The American-born son of a half-Chinese commoner accidentally inherits a throne close to extinction and revives it, creating one of the world's most powerful and wealthy monarchies, and surely the only one of any significance to have gained in political power in modern times.

ECONOMIST: Thailand's king and its crisis