W H Barker

Performance-based physician reimbursement and influenza immunization rates in the elderly. The Primary-Care Physicians of Monroe County.

F M LaForce, J D Cappuccio, R. Kouides, 1998, American journal of preventive medicine.

Excess pneumonia and influenza associated hospitalization during influenza epidemics in the United States, 1970-78.

W. Barker, W H Barker, 1986, American journal of public health.