TP53 and ovarian cancer: We wish to thank Prof. George Tsao from Department of Anatomy, The University of Hong Kong, Hong Kong, for providing HOSEs cell lines; Prof. Benjamin Tsang from Department of Obstetrics and Gynaecology, University of Ottawa, Canada, for providing A2780s A2780cp, OV2008, C13* ovarian cancer cell lines; and Prof. Randy YC Poon from Section of Biochemistry and Cell Biology, Hong Kong University of Science and Technology, Hong Kong, for providing pRcCMV-p53 expressing plasmid.