All
 L01 Information Science D007254 +
 L01.700 Medical Informatics D008490 +
 L01.700.568 Medical Informatics Computing D008492 +
 L01.700.568.080 Computer Systems D003199 +
 L01.700.568.080.260 Computers D003201 +
 L01.700.568.080.260.115 Computer Peripherals D016287 +
 L01.700.568.080.260.115.475 Computer Storage Devices D016248 +
 L01.700.568.080.260.115.475.600 Optical Storage Devices D016249 +
 L01.700.568.080.260.115.475.600.325 Compact Disks D016250 +
 L01.700.568.080.260.115.475.600.325.750 CD-ROM D016251 
 L01.700.568.080.260.115.475.600.325.500 CD-I D019034