University of Cambridge Survey on Menopause with first question about gender and not sex. As far as I can make out they don't ask about biological sex at all. I've written to the lead investigator to say I won't be filling it in now after starting it. Here's the link in case anyone's interested.
www.facebook.com/100065192183152/posts/pfbid02vvjVooZ41gtLqJYCsPWRGYgMXuHGEUv8DZZ6aTf91oW7uBrV1r5xVEVehaByBXr1l/