The query is broad - "Anemia" covers a large topic. Let me clarify what the user needs before doing deep research.

Since "Anemia" is a broad topic, let me check what the user wants before diving into research.

Anemia is a reduction in red blood cell mass or hemoglobin concentration below normal, impairing oxygen delivery to tissues. It is classified by morphology (MCV-based) or by underlying mechanism. Let me pull detailed content from the medical library now.

Good. Now searching the library in parallel - headings for anemia overview and paragraphs for classification:

Excellent results. Let me read the three most authoritative sources in parallel - Harrison's, Robbins, and Tintinalli's:

Great content. Now let me read more from Harrison's (the mechanism section and clinical features) and look for pathophysiology and signs/symptoms:

Let me search specifically for anemia clinical presentation and diagnostic approach in Harrison's and Goldman-Cecil:

Excellent. Let me read Harrison's diagnostic approach section and the Frameworks severity section for the final pieces:

There's an anemia classification flowchart image - let me fetch it, and also fetch the microcytic/macrocytic RBC image: