Hip implant prices on way down.
D003284:Contract Services / Q000191:economics / Q000592:standards; D004465:Economic Competition; D017754:Group Purchasing / Q000191:economics; D006622:Hip Prosthesis / Q000191:economics*; D017721:Hospital Costs / Q000639:trends*; D007182:Income; D008421:Materials Management, Hospital / Q000191:economics*; D017008:Negotiating; D014481:United States