Results of this double-blind, placebo-controlled study indicated that both lowfrequency electromagnetic field treatment and treatment with pulsed electromagnetic fields proved effective in patients suffering from chronic bronchitis when coupled with standard drug therapies. Magnetic field treatment consisted of a total of 15 15-20-minute daily exposures.

V.M. Iurlov, et al., “The Efficacy of the Use of Low-Frequency Electromagnetic Fields in Chronic Bronchitis,” Voen Med Zh, 3, 1989, . 35-36.