@misc{indiciaec2ed45bbe2a4, title = {Complications with I.U.D.s.}, author = {C Tietze}, year = {1969}, doi = {10.1136/bmj.2.5654.444-a}, url = {https://pubmed.ncbi.nlm.nih.gov/5781494/}, note = {Source identifier: 5781494} }