@article{m. valenzano2001ultrasonography,
  title={Transvaginal ultrasonography and hysterosonography to monitor endometrial effects in tamoxifen-treated patients},
  author={m. valenzano,g. f. bertelli,s. costantini,a. corticelli,l. del mastro,r. paoletti,o. garrone,r. rissone},
  journal={European Journal of Gynaecological Oncology},
  volume={22},
  number={6},
  pages={441--444},
  doi = {10.12892/ejgo200106441},
  year={2001}
}