@misc{indiciaefbb81a8e475d, title = {Letter: Serum alpha-fetoprotein in cystic fibrosis.}, author = {G Knopple and H W Rotthauwe and F G Lehmann}, year = {1975}, doi = {10.1136/bmj.4.5994.459-a}, url = {https://pubmed.ncbi.nlm.nih.gov/53087/}, note = {Source identifier: 53087} }