Hi, texasflower. I believe he was poisoned and a few doctors have been threatened to withdraw their earlier comments. Dr. Koplan (sp?) who is quoted in this article is the doctor who has now withdrawn him earlier comments or says he never said what the earlier Times article quoted him as saying.
We shall see in the coming weeks ahead what really happened. It sounds like American doctors examined him also and they will not give in to the KGB or anyone else!