PancytopeniaCimetidineHistamine H2 AntagonistsAnemia, AplasticGuanidinesLymphohistiocytosis, HemophagocyticHypersplenismBone MarrowRanitidineHistiocytosis, Non-Langerhans-CellBone Marrow DiseasesAnemia, MegaloblasticFamotidineDuodenal UlcerReceptors, Histamine H2DimapritFatal OutcomeAnemia, MacrocyticLymphomatoid GranulomatosisMyelodysplastic SyndromesHistamineBone Marrow ExaminationTuberculosis, MiliaryGastric AcidReceptors, HistamineHemoglobinuria, ParoxysmalSplenomegalyTachycardia, SinusBlood Cell CountPyrilamineAnti-Ulcer Agents