title: Letter: Cystic fibrosis.
mesh_terms: D002175:Candida / Q000302:isolation & purification; D003550:Cystic Fibrosis / Q000382:microbiology*; D004755:Enterobacteriaceae / Q000302:isolation & purification; D006193:Haemophilus influenzae / Q000302:isolation & purification; D006801:Humans; D011549:Pseudomonas / Q000302:isolation & purification; D013183:Sputum / Q000382:microbiology; D013210:Staphylococcus / Q000302:isolation & purification; D013291:Streptococcus / Q000302:isolation & purification