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Numerous men who stored sperm at Barwin’s clinic have also contacted the law firm with concerns. They are worried their sperm may have been used to inseminate other women.

Cronyn said the case is the only one he knows of in Canada in which a physician has allegedly inseminated fertility clients with his own sperm. He said he would not be surprised if more people come forward.

The people involved are “very distressed,” he said.

“My heart goes out to all of them. Many have demonstrated tremendous courage and are trying their best. It has been very hard.”

None of the allegations has been proven in court.

The lawyers said they are amending the statement of claim previously filed to include the new information. Once it is certified as a class action, the next step will be to establish a process for claims to be adjudicated and resolved, they said.

As part of the resolution process, they said, they are working on a way to help people who were conceived with unknown sperm to find out who their biological fathers are and get in touch with half-siblings. They said they want to be sure those conceived with Barwin’s sperm can collect health information they may need.

Among them is Kat Palmer, 26, whose parents sought treatment from Barwin. He acknowledged in 2015 that he was her biological father based on a paternity test.

Cronyn said the law firm is working with a geneticist to help find a resolution for those whose biological fathers are unknown.