| Exhibit 4.2 Sooner Health Network: Activity Cost Detail |
| Activity | Cost Driver | Volume | Cost per Unit |
| Appointment scheduling | Receptionist time | 3 min | $ 0.20 |
| Patient check-in | Receptionist time | 5 min | $ 0.20 |
| Ultrasound testing | Technician time | 30 min | $ 0.40 |
| Physician time | 1.5 min | $ 3.00 |
| Supplies | per procedure | $ 9.00 |
| Patient check-out | Receptionist time | 5 min | $ 0.20 |
| Film processing | Technician time | 10 min | $ 0.40 |
| Film reading | Contract terms | per procedure | $ 40.00 |
| Billing and collection | Overhead costs | per procedure | $ 6.80 |
| General administration | Overhead costs | per procedure | $ 1.25 |
| Transportation, setup, and breakdown | Technician time | 18 min | $ 0.50 |
| Notes: |
| 1 | Physician time for testing (15 minutes) is needed for one of every ten patients. |
| 2 | Supplies consist of linen, probe cover, gel, film, and printer paper. |
| 3 | There are no radiologist in the Network. Films will be read by the hospital's radiologist at a contreact fee of $40 per procedure |
| 4 | Billing and collection costs are based on an average cost per medical services bill. |
| 5 | General administration costs are based on an estimate of facilities and other administrative costs. |
| 6 | Transportation, setup, and breadown are based on ten procedures per day and include vehicle operating costs, excluding maintenance. |