Original sentence: AZT is also the source of another controversy; there are some who claim that AZT in fact causes AIDS, not HIV
Edited sentence: AZT is also the source of another controversy, this time one that amounts to a conspiracy theory, claiming that AZT in fact causes AIDS, not HIV.The conspiracy is that Glaxo-Wellcome is aware of this, and continues selling AZT in order to generate a population dependent on its products