Sick children--Diagnosis--Handbooks, manuals, etc. Children--Diseases--Diagnosis--Handbooks, manuals, etc. Infants--Diseases--Diagnosis----Handbooks, manuals, etc. Children--Health and hygiene--Handbooks, manuals, etc. Preventive health services for children--Handbooks, manuals, etc. Medical care--Needs assessment--Handbooks, manuals, etc.