INDIA'S Maiden Pharmaceuticals, whose cough syrups have been linked to the deaths of children in Gambia, denied it had tampered with test samples or bribed officials to do so, as alleged in a complaint under investigation by local health officials. An investigator with the state of Haryana's Food and Drug Administration told Reuters on Friday he was close to finishing a probe into whether a state drug regulator was bribed to switch samples, tested by the Indian government, that contradicted the World Health Organization's findings of toxic substances in the cough syrups. "I have never changed the sample," Maiden founder Naresh Kumar Goyal…