title: Beware of chasing crystals in sputum samples.
authors.forename: Hongling
authors.initials: H
authors.lastname: Wang
authors.forename: Prabodh K
authors.initials: PK
authors.lastname: Gupta
mesh_terms: D016477:Artifacts; D001228:Aspergillosis / Q000378:metabolism / Q000473:pathology; D001234:Aspergillus niger / Q000302:isolation & purification / Q000378:metabolism; D002129:Calcium Oxalate / Q000032:analysis / Q000378:metabolism; D003951:Diagnostic Errors; D013048:Specimen Handling; D013183:Sputum / Q000737:chemistry / Q000382:microbiology*
chemical_list: D002129:Calcium Oxalate