@misc{indiciae27d258e9f204, title = {Epidemiology for the uninitiated. Observer variation.}, author = {G Rose and D J Barker}, year = {1978}, doi = {10.1136/bmj.2.6143.1006}, url = {https://pubmed.ncbi.nlm.nih.gov/709176/}, note = {Source identifier: 709176} }