Nephrology Medicine (AOBIM) nephrology examination. Nephrologists must be approved by one of these boards. To be approved, the physician must fulfill the requirements for education and training in nephrology in order to qualify to take the board's examination. If a physician passes the examination, then he or she can become a nephrology specialist. Typically, nephrologists also need two to three years of training in an ACGME or AOA accredited fellowship in nephrology. Nearly all programs train nephrologists in continuous renal replacement therapy; fewer than half in the United States train in the provision of plasmapheresis. Only pediatric trained physicians are able
Four Organs work, each tone sounds almost in sequence. A continuous maraca beat serves as a rhythmic framework. Reich describes the piece as "the longest V–I cadence in the history of Western Music," the V and I chords being contained within the one chord. "You'll find the chord in Debussy and Thelonious Monk – the tonic on top and the dominant on the bottom." He has cited the music of Pérotin and other twelfth and thirteenth century composers as suggesting the technique of note augmentation used in "Four Organs". For performances of the piece, Reich recommended using electronic organs with as plain