title: Clustering in Hodgkin's disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003141:Communicable Diseases; D006689:Hodgkin Disease / Q000150:complications / Q000151:congenital / Q000453:epidemiology* / Q000235:genetics / Q000382:microbiology; D006801:Humans; D007154:Immune System Diseases; D007231:Infant, Newborn; D007244:Infectious Mononucleosis / Q000150:complications