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_{183 Morton DJ: Foot disorders in women. J Am Med Worn Assoc 10:41–46, 1955.}

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_{187. National Research Council, Committee on Dietary Allowances: Recommended Dietary Allowances. Ed. 9. National Academy of Sciences, Washington, 1980.}

_{188. Ibid. (pp. 125–164).}

_{189. Ibid. (pp. 84, 85, 99-102).}

_{190. Neal RA, Sauberlich HE: Thiamin. Chapter 6E. In: Modem Nutrition in Health and Disease. Ed. 6. Edited by Goodhart RS, Shils ME. Lea & Febiger, Philadelphia, 1980 (pp. 191, 193–196).}

_{191. Neeck G, Riedel W: Thyroid function in patients with fibromyalgia syndrome. J Rheumatol 19:1120–1122, 1992.}

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_{196. Niederwiesner A: Inborn errors of pterin metabolism. Chapter 33. In: Folic Acid In Neurology, Psychiatry, and Internal Medicine. Edited by Botez MI, Reynolds EH. Raven Press, New York, 1979 (pp. 351, 354, 364, 365).}

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_{206. Pfeiffer CC: Mental and Elemental Nutrients. Keats Publishing, New Canaan, Conn., 1975 (pp. 146, 251, 280, 281, 469).}

_{207. Pincus JH: Folic acid deficiency: a cause of subacute combined system degeneration. Chapter 39. In: Folic Acid in Neurology, Psychiatry, and Internal Medicine. Edited by Botez Ml, Reynolds EH. Raven Press, New York, 1979 (p. 432).}

_{208. Pincus JH, Reynolds EH, Glaser GH: Subacute combined system degeneration with folate deficiency. JAMA 221:496–497, 1972.}

_{209. Plorde JJ: Amebiasis. Chapter 199. In: Harrison ’s Principles of Internal Medicine. Ed. 9. Edited by Isselbacher KJ, Adams RD, Braunwald E, et al. McGraw-Hill, New York, 1980 (pp. 863–864).}

_{210. Plorde JJ: Minor protozoan diseases. Chapter 205. In: Harrison's Principles of Internal Medicine. Ed. 9. Edited by Isselbacher KJ, Adams RD, Braunwald E, et al. McGraw-Hill, New York, 1980 (pp. 887–888).}

_{211. Plorde JJ: Cestode (tapeworm) infections. Chapter 213. In: Harrison’s Principles of Internal Medicine. Ed. 9. Edited by Isselbacher KJ, Adams RD, Braunwald E, et al. McGraw-Hill, New York, 1980 (pp. 916–917).}

_{212. Pruthi RK, Tefferi A: Pernicious anemia revisited. Mayo Clin Proc 69: 144–150, 1994.}

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_{214. Randall HT: Water, electrolytes and acid-base balance. Chapter 8. In: Modem Nutrition in Health and Disease. Ed. 6. Edited by Goodhart RS, Shils ME. Lea & Febiger, Philadelphia, 1980 (pp. 368, 378).}

_{215. Redler I: Clinical significance of minor inequalities in leg length. New Orleans Med SurgJ 104:308–312, 1952.}

_{216. Robbins J, Rail JE, Gorden P: The thyroid and iodine metabolism. Chapter 19. In: Metabolic Control and Disease. Ed. 8. Edited by Bondy PK, Rosenberg LE. Saunders, Philadelphia, 1980 (pp. 1333, 1343–1345).}

_{217. Roe DA: Drug-induced Nutritional Deficiencies. AVI Publishing, Westport, Conn., 1976 (pp. 7-17, 72, 73, 79–81, 85, 96–99, 150, 151, 160–167, 215–216, 223–227).}

_{218. Ibid. (pp. 72, 83, 120, 217).}

_{219. Romano TJ: Magnesium deficiency in patients with myofascial pain. J Myofasc Ther 1:11–12, 1994.}

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_{221. Rose DP: Oral contraceptives and vitamin B6. Chapter 11. In: Human Vitamin B6 Requirements. National Academy of Sciences, Washington, 1978 (pp. 193–201).}

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_{224. Rosenblatt DS, Cooper BA: Methylenetetrahy-drofolate reductase deficiency: clinical and biochemical correlations. Chapter 34. In: Folic Acid in Neurology, Psychiatry, and Internal Medicine. Edited by Botez MI, Reynolds EH. Raven Press, New York, 1979 (p. 389).}

_{225. Rubin D: Myofascial trigger point syndromes: an approach to management. Arch Phys Med Rehabil 62:107–110, 1981.}

_{226. Ruff RL, Weissmann J; Endocrine myopathies. Neurol Clin North Am 6:575–592, 1988.}

_{227. Runcie J: Folate deficiency in the elderly. Chapter 45. In: Folic Acid in Neurology, Psychiatry, and Internal Medicine. Edited by Botez MI, Reynolds EH. Raven Press, New York, 1979 (pp. 493–499).}

_{228. Russell IJ, Vipraio GA, et al.: Insulin-like growth factor (IGFI) in fibromyalgia, rheumatoid arthritis, osteoarthritis and healthy normal controls: Roles of diagnosis, age, sex and ethnic origin [Abstract). Arthritis Rheum 35:SI60, 1992.}

_{229. Ryschon TW, Rosenstein DL, et al.: Relationship between skeletal muscle intracellular ionized magnesium and measurements of blood magnesium. J Lab Clin Med 127:207–213, 1996.}

_{230. Sauberlich HE, Canham JE: Vitamin B6. Chapter 61. In: Modem Nutrition in Health and Disease. Ed. 6. Edited by Goodhart RS, Shils ME. Lea & Febiger, Philadelphia, 1980 (pp. 219–225).}