@misc{indiciae9ec240bb430c,
  title = {Progestogen only contraception and endometrial break through bleeding.},
  author = {Oliver P Milling Smith and Hilary O D Critchley},
  year = {2005},
  doi = {10.1007/s10456-005-9003-z},
  url = {https://pubmed.ncbi.nlm.nih.gov/16211361/},
  note = {Source identifier: 16211361}
}