Medical regulators in New Jersey Friday will consider whether to suspend a doctor's license after nearly 3,000 patients were advised to get tested for hepatitis B.

Five have tested positive.

Dr. Parvez Dara's attorney says there's no proof the five cancer patients contracted the disease from the oncologist's office in Toms River.

Attorney Robert Conroy says there may be other factors.

State health officials say evidence suggests the infections could be linked to injections, like chemotherapy, the patients received at Dara's office.

Hepatitis B is transmitted through exposure to infected blood.