Hayhoe, S; McCrossan, M; Smith, A; Ellis, D; Croft, S; Mei, MF; (2002) Single-use acupuncture needles: scanning electron-microscopy of needle-tips. Acupuncture in medicine, 20 (1). pp. 11-8. ISSN 0964-5284 https://researchonline.lshtm.ac.uk/id/eprint/17861 Full text not available from this repository.