D b r i e m e n t d'ktrophysique Relativiste et d e Cosmologie O b m t o i r e , 92190 Meudon, France AbsImacL Slatting from the equations of motion obeyed by fields, as they result from general approximations [they are m!ia to be of the following form [k2n(k)]+ = 0, for quasi bosons, and a similar equation for quasifermions] a lagmgian formalism is derived and, accordingly, consewed quantities are obtained. Next these fields are quantized and general expressions for the main observables are derived. Statistical mechanics of quasiparlicles then follow via the use of covariant Wigner functions.

A 21-year-old man had blue rubber bleb nevus syndrome: 1) hemangiomas of the skin all over the body; 2) hemangiomas of the digestive system; 3) iron-deficiency anemia. A giant mass of hemangiomas in the tranverse colon was resected surgically.

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