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Patents Abstracts of Japan, vol. 8, No. 163 (P-290) [1600], 27 Jul. 1984; & JP-A-59 60 346 (Toshiba K.K.) 06-04-1984 "Resume", PCT WO 84/00611, 16 Feb. 1984, W. Oldendorf, Adjustable Magnet Suitable for in Vivo NMR Imaging and Method of Adjusting the Same. |