00349cas a2200133 a 4500001000700000003000400007005000900011008000100020245009700021260001100118300001500129500005800144040001300202148926OSt20180921 aHospital and health services administration /cHospital and health services administration / aUSA, 0 aVol. 30-33 aA partir del año 1987 la periodicidad es trimestral aDLCcDLC