“…Despite individual case reports, myasthenia does not seem to show a strong relation to disorders linked with autoimmunity, other than thyroid disease (Wolf, Rowland, Schotland, McKinney, Hoefer, and Aranow, 1966). Increased incidence of thyroid, and, to a lesser extent, gastric parietal cell antibodies has been found in myasthenic patients (Simpson, 1964(Simpson, , 1966Downes, Greenwood, and Wray, 1966;Wright and Kerr, 1967), and reflects histological findings (Schade, Owen, Smart, and Hall, 1960;Wright, Whitehead, Wangel, Salem, and Schiller, 1966).…”