@misc{indiciae8757dbeef32a, title = {Rh "null" is not always null.}, author = {M M Stevenson and V Anido and A M Tanner and J Swoyer}, year = {1973}, doi = {10.1136/bmj.1.5850.417-a}, url = {https://pubmed.ncbi.nlm.nih.gov/4632359/}, note = {Source identifier: 4632359} }