Venezuela's acting President, Maduro, gestures to supporters after he registered as a candidate for president in the April 14th election outside the national election board in CaracasBy means of Andrew Cawthorne CARACAS (Reuters) – Venezuela will set up a proper inquiry into claims that deceased President Hugo Chavez's most cancers was once the result of poisoning with the aid of his enemies abroad, the federal government said. Foes of the federal government view the accusation as a regular Chavez-type conspiracy theory intended to feed fears of "imperialist" threats to Venezuela's socialist system and distract people from daily issues. Acting President Nicolas Maduro vowed to open an investigation into the claims, first raised via Chavez after he was once identified with the disease in 2011. …