Dorsher, Peter T. (2008). “Can Classical Acupuncture Points and Trigger Points Be Compared in the Treatment of Pain Disorders? Birch's Analysis Revisited”. The Journal of Alternative and Complementary Medicine14 (4): 353–359. doi:10.1089/acm.2007.0810. PMID18576919.
Dorsher, Peter T. (2008). “Can Classical Acupuncture Points and Trigger Points Be Compared in the Treatment of Pain Disorders? Birch's Analysis Revisited”. The Journal of Alternative and Complementary Medicine14 (4): 353–359. doi:10.1089/acm.2007.0810. PMID18576919.