1. Chien CH, Tsuei JJ, Lee SC, Huang YC, Wei YH: Effect of emitted bioenergy on biochemical functions of cells. Am J Chin Med. 1991, 19: 285-292.
2. Sander KM, Hu B: Medical applications of qigong and emitted qi on humans, animals, cell cultures and plants: review of selected scientific studies. Am J Acupunct. 1991, 19: 367-377.
3. Sander KM: Medical aspects of qigong. Alternative Therapies. 1996, 2: 40-46.
4. Wang C, Xu D, Qian Y: Medical and healthcare qigong. J Trad Chin Med. 1991, 11: 296-301.
5. Reuther I, Aldridge D: Qigong Yangsheng as a complementary therapy in the management of asthma. J Altern Complement Med. 1998, 4: 173-183.