@misc{indiciaebb061c9e6808, title = {Methodological issues in epidemiologic studies using biologic markers.}, author = {B S Hulka and B H Margolin}, year = {1992}, doi = {10.1093/oxfordjournals.aje.a116272}, url = {https://pubmed.ncbi.nlm.nih.gov/1536135/}, note = {Source identifier: 1536135} }