Does anyone have any experience with American Board of Cardiovascular Medicine (ABCM)? I am interested in taking the Level IV CVNP-BC exam through ABCM. It seems that there is no review material. Wonder what books or website will be helpful to prepare for the exam. I also have some questions that I wanted to clarify before I pay for the testing fee. I have emailed their director, also called them several times and left voicemail messages. However, I haven't heard back from anybody..... Thanks a lot!