@misc{indiciae97757dd5e732, title = {S.O.S.}, author = {B Champney and J A Cotterill}, year = {1971}, doi = {10.1016/s0140-6736(71)92557-8}, url = {https://pubmed.ncbi.nlm.nih.gov/4106703/}, note = {Source identifier: 4106703} }