The letter, dated March 5, also said that the Chief Minister had already consulted doctors abroad for his treatment.
"I have been advised by an expert team of doctors in Goa as well as in Mumbai ... to travel overseas for specialist expert treatment of my medical condition.
The Chief Minister, who has been in and out of hospitals since February 15, left for Mumbai's Lilavati Hospital on Monday evening where he is being treated for "mild pancreatitis", according to an official statement.
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