Watch out for misleading chemical names.
Davis
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The Institute for Safe Medication Practices, Inc., Huntingdon Valley, PA.
D011307:Drug Prescriptions; D006801:Humans; D008505:Medical Staff, Hospital; D008508:Medication Errors; D009745:Nursing, Supervisory; D009626:Terminology as Topic; D013866:Thioguanine / Q000008:administration & dosage* / Q000009:adverse effects
D013866:Thioguanine