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age group allergisch reagerende allergy Berg bronchus brothers and sisters calcification calculated cent child children in Palembang Chinese children clinic children culin cutaneous deceased brothers difference disease epidemiological examined factors fluoroscopy fraction F0 gevonden glands Graph groups of kampongs Haas heterogeneity Heynsius hilar hilus homogeneous groups hypothesis H0 immunity increase Indonesian and Chinese Indonesian children Indonesian Chinese infection rate infiltration Injo Jakarta kampong groups kinderen living brothers Mantoux test Ned.-Indie negative Netherlands Netherlands East Indies number of deceased number of living number of positive number of rooms number of siblings out-patient Pirquet test positive reactors positive tuberculin reaction pulmonary lesions pulmonary tuberculosis reactie reaction rates resistance Scand scarification school children schoolkinderen shows South Sumatra Statistical Report Straub Sumatra TABLE tail-probability tion tuber tubercle bacilli tuberculin allergy tuberculin index tuberculin sensitivity tuberculin survey tuberculin test tuberculin-positive Tuberculosis Research tuberculous tuberculous infection Ustvedt weakly positive werd