@misc{indiciaee7ee9b536155, title = {Selection bias introduced by the informed consent process.}, author = {Nina Hannover Bjarnason and Jens Peter Kampmann}, year = {2003}, doi = {10.1016/s0140-6736(03)13568-4}, url = {https://pubmed.ncbi.nlm.nih.gov/12801770/}, note = {Source identifier: 12801770} }