Call For Private Tender No. 1048 Service For Transferring Dialysis Patients From The Alto Neuquén Health Region To The Chos Malal Dr. Gregorio Álvarez Hospital, For A Period Of Twelve (12) Months. Call For Private Tender No. 1048 Service For Transferring Dialysis Patients From The Alto Neuquén Health Region To The Chos Malal Dr. Gregorio Álvarez Hospital, For A Period Of Twelve (12) Months.