Current use and costs of electronic health records for clinical trial research: a descriptive study

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.

Basel Institute for Clinical Epidemiology and Biostatistics (Mc Cord, Ewald, Ladanie, Briel, Speich, Bucher, Hemkens), Department of Clinical Research, University Hospital Basel, University of Basel; University Medical Library (Ewald), University of Basel; Swiss Tropical and Public Health Institute (Ladanie), University of Basel, Basel, Switzerland; Department of Health Research Methods, Evidence, and Impact (Briel), McMaster University, Hamilton, Ont.