A Canadian fertility doctor is being sued by dozens of people who claim he used his own or unknown sperm to impregnate their mothers.
In November Dr Norman Barwin was sued after a DNA test said he was the father a former patient’s daughter.
At least 11 others now claim he is their biological father, lawyers say.
The group filed a class-action lawsuit with about 50 offspring of former patients whose DNA does not match their intended biological father.
The claims go as far back as the 1970s, and include patients from at least two fertility clinics in Ottawa, Ontario – Broadview Fertility Clinic and Ottawa General Hospital.