5 stars (first aid cs) - I paid a reasonable amount for the item and and i received it a few days later in great shape.There was no problem whatsoever. 5 stars (Medical Boards Review) - Great help for the USMLE CS. Has a wide variety of cases with differential diagnosis and work up plan for almost every possible case that will be on the test. Definately worth it! 5 stars (Water in the USMLE Desert) - I recently passed the Step 2 CS using this book and I must say that this was not the only reference source I used. The truth is though that it was the only source worth turning to. I bought the Kaplan book along with the FIRST AID but I soon found myself using only the FIRST AID. . It turns out that the Kaplan people have no idea what it takes to help students pass this test( I have known several people who have taken their week long prep course and failed the Step 2 CS exam)......yet the authors of the First Aid do!!! The First Aid has complete and reliable Patient NOTES for almost every scenario you could find on the test....Kaplan's book does not. The scenarios in this book are perfectly made so that you can practice with a friend or loved one.....Kaplan's book was not organized well for this purpose (if at all). In addition, after doing much research (hint, hint), I came to know I was better off using the First Aid to pass. On exam day, it was the book I saw most often in students hands (More so in the hands of American Medical Students than in the hands of IMG's!!). If you are a smart test taker......then you like to pass, to pass you would want to have the tools that the winners are using. For this reason I recommend the FIRST AID as a reliable source for USMLE Step 2 CS preparation. ... McGraw-Hill Medical :: Medical & Test Preparation & Review :: United Staes :: Tests :: Study guides :: Physicians :: Medical :: Licenses :: First Aid (Internal Medicine) :: Examinations :: Em :: First Aid for the USMLE Step 2 CS (Clinical Skills Exam)