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51. Femer H, Staubesand J Sobotta Atlas of Human Anatomy, Ed 10, Vol 2 Urban & Schwarzenberg, Baltimore, 1983 (Figs 380, 381)
52. Ibid. (Figs 401, 412, 435)
53. Ibid. (Fig 420)
54. Ibid. (Fig 464)
55. Ibid. (Figs 465, 467)
56. Ibid. (Fig 466)
57. Ibid. (Fig 470)
58. Ibid. (Fig 472)
59. Fowler AW Relief of cramp Lancet 199, 1973
60. Fowler AW Night cramp Br Med J 2:1563, 1976
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