title: Firms help address billing problems.
authors.forename: J
authors.initials: J
authors.lastname: Tieman
mesh_terms: D016507:Cardiology Service, Hospital / Q000191:economics*; D016208:Databases, Factual; D007255:Information Services; D009518:New York; D010350:Patient Credit and Collection; D011177:Postal Service; D012943:Social Security