Impact of changes in anaesthesia staff assignments on billing compliance, financial margins, and costs of anaesthesia services: development and application of a margin-cost estimat... von Wachtendorf, Luca J., Tsay, Minghan L., Witt, Annika S., Ferrazza, Dawn M., Hess, Phil E., Schaefer, Maximilian S., Eikermann, Matthias, Fassbender, Philipp

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