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To the Editor:—
This is in reference to Dr. Fred V. Hein's "Answer" on the subject of step test equipment (204:1201, 1968).Before any physician ventures to build the "step test stool" with four different heights, as recommended by the Committee on Exercise and Physical Fitness, please publish these much more compact and practical versions of step test equipment.
SCHMERL EF. Step Test Equipment. JAMA. 1968;206(1):136. doi:10.1001/jama.1968.03150010084037