The issue focused on his role in the study, but also over what amount of research he was doing.

"I am not an academic," said researchers at University College London. "I am a scientist and that is my job. I would like to do studies that are scientific, fair, objective, sensitive to population science and affect public health. This does not seem to be one of them."

In May last year, researchers from Stony Brook University had published a study which found four men have