Dieter Melchart, Andrea Streng, Andrea Hoppe, Benno Brinkhaus, Claudia Witt, Stefan Wagenpfeil et al
Melchart D, Streng A, Hoppe A, Brinkhaus B, Witt C, Wagenpfeil S et al.
Acupuncture in patients with tension-type headache: randomised controlled trial
BMJ 2005; 331 :376
doi:10.1136/bmj.38512.405440.8F