Clinical and pathological associations of PTEN expression in ovarian cancer: a multicentre study from the Ovarian Tumour Tissue Analysis Consortium - Martins, Filipe Correia; Couturier, Dominique-Laurent; Paterson, Anna; Karnezis, Anthony N.; Chow, Christine; Nazeran, Tayyebeh M.; Odunsi, Adekunle; Sousa, Christiani B. de; Tiezzi, Daniel Guimarães; Andrade, Jurandyr Moreira de; Reis, Francisco José Candido dos (British Journal of Cancer, 2020)