"Some of them sustained injuries all over their body, including in their ribs and kidneys, from being kicked and beaten… some of them were sick because of their injuries," he said.

During pregnancy healthy kidneys have to work overtime to keep the blood clean whilst the baby releases wastes into the mother’s blood stream.

"We need to accurately understand the effects of long-term use of RAS inhibitors on the kidneys."

Ms Campbell was told by doctors that her aunt's kidneys were not functioning properly.

The former Disney Channel child star revealed in 2017 that she had undergone a kidney transplant due to lupus nephritis, where the autoimmune disease lupus causes a person’s kidneys to fail.