Centers for Disease Control and Prevention: Prussian Blue. emergency.cdc.gov/radiation/prussianblue.asp.
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Johns Hopkins Children’s Center: Stool color guide. hopkinsmedicine.org/health/articles-and-answers/healthy-children/stool-color-guide.
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Mayo Clinic: Mucus in stool: A concern? mayoclinic.org/mucus-in-stool/expert-answers/faq-20058262.
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Bristol stool form scale: niddk.nih.gov/health-information/health-communication-programs/bowel-control-awareness-campaign/Documents/Bristol_Stool_Form_Scale_508.pdf.
