It doesn't have to be 1-800-TUF-LUCK: the clinician's role in appealing denied claims.
Turnbull
G B
GB
D006279:Health Maintenance Organizations / Q000191:economics*; D006801:Humans; D007345:Insurance Claim Review / Q000458:organization & administration*; D016345:Medicare Part B / Q000191:economics*; D010030:Ostomy / Q000451:nursing; D012051:Reimbursement Mechanisms / Q000458:organization & administration*; D014481:United States; D014947:Wounds and Injuries / Q000451:nursing