david scanned the data.there were no names mentioned.each volunteer was represented by a number.this was customary during a research study to keep the names of the individuals confidential , and to avoid any age or gender bias.the first name and last initial could be furnished upon request , but full names were never provided , unless the fda found the need to randomly contact study participants.in simple terms , david could not justifiably demand the volunteers names without providing specific concerns about the test results .