The non-Medicare patients include many who lack insurance and cannot afford to pay their hospital bills, he said.

The patients included in this study population were from a broad mixture of countries.

Their patients included one as young as eight, and several others aged under 20.

Freeman's patients included 19 children, one of whom was 4 years old.

His patients have included many famous world class athletes and many well known celebrities.

Such patients include those with cancer and recipients of transplanted organs.

His patients have included doctors, lawyers and judges, he said.

All the patients included signed an informed consent form.

His patients also include groups of children 8 to 14 years old.

Other patients include widows and divorced people "who want to look better in order to meet someone new."