Chinese authorities are carrying out forced sterilisations of women in an apparent campaign to curb the growth of ethnic minority populations in the western Xinjiang region, according to research published on Monday. The report, based on a combination of official regional data, policy documents and interviews with ethnic minority women, has prompted an international group of lawmakers to call for a United Nations investigation into China’s policies in the region. The move is likely to enrage Beijing, which has denied trampling on the rights of ethnic groups in Xinjiang, and which on Monday called the allegations “baseless”. The country is...