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Here are the most popular resources that people use for the USMLE Step 2 CK on Cram Fighter. These aren't necessarily the best study resources, but they should be a good starting point.

Rank Title (all editions) % of students used
1. UWorld 81.7
2. OnlineMedEd 51.5
3. Anki 21.7
4. Master the Boards USMLE Step 2 CK 18.5
5. First Aid for the USMLE Step 2 CK Clinical Knowledge 16.4
6. AMBOSS 9.8
7. Step-Up to Medicine 9.4
8. USMLE Step 2 Secrets 8.1
9. SketchyPharm 5.7
10. Dr. Pestana's Surgery Notes 4.5
11. SketchyMicro 4.3
12. SketchyIM 3.2
13. COMBANK 3.0
14. Flashback 2.1
15. Step-Up to USMLE Step 2 1.9
16. Case Files Obstetrics & Gynecology 1.9
17. USMLE Step 2 CK Lecture Notes: Obstetrics and Gynecology 1.9
18. Firecracker 1.9
19. First Aid for the Psychiatry Clerkship 1.7
20. Kaplan Qbank 1.7

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