@misc{indiciae85c5bff87f17, title = {Letter: Type-A hepatitis.}, author = {A A Laiwah and A K Chaudhuri}, year = {1974}, doi = {10.1016/s0140-6736(74)93182-1}, url = {https://pubmed.ncbi.nlm.nih.gov/4131062/}, note = {Source identifier: 4131062} }