| John calls the call center to volunteer for a research study |
|
 | I Would like to particpate in a research study. | |
|
| Well, sir if you would answer just a few questions , we can register you and find the right study for you | |
|
|
|
|
|
| The operator asks John a series of questions to match him with the proper study |
|
| Well sir are you between the age of 25 and 50? | |
|
| Yes I'm 45 | |
|
|
|
|
|
|
