“…At first the attacks tend to last for only a few minutes with long intervals, but later they may be more frequent, more severe, and last for many hours. Finally the patient may remain in the state of hypertension (19).…”
“…At first the attacks tend to last for only a few minutes with long intervals, but later they may be more frequent, more severe, and last for many hours. Finally the patient may remain in the state of hypertension (19).…”
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