A common example of a workflow is a patient referral workflow between affiliated clinics and hospitals, where the clinics refer patients for procedures such as X-rays. Often, the referral process is paper-based. A nurse or physician's assistant fills out a paper referral form with patient information and requested procedures. A doctor must then sign the form. Once signed, the form is then faxed to the hospital where it is manually scanned or the data is entered into the hospital's document management or hospital administration system.