Take the following as truth: The first warning that these drugs could pose health risks came a year ago, when the New England Journal of Medicine published an article by French researchers linking fen-phen to a deadly cardiac disease called primary pulmonary hypertension.
Then the following statement: "There have been minimal cases of primary pulmonary hypertension prior to the creation of fen-phen." is true, false, or inconclusive?
Answer: Inconclusive