Severe Headaches, When to Worry, What To Do
Postgrad Med 83:164-180, Drexler,E.D., 1990
Thunderclap Headache With Normal CT and Lumbar Puncture: Further Investigations Are Unnecessary: For
Stroke 39:1392-1393,1396, Savitz,S.I. &Edlow,J., 2008
Thunderclap Headache With Normal CT and Lumbar Puncture: Further Investigations Are Unnecessary: Against
Stroke 39:1394-1395,1396, Moussouttas,M. &Mayer,S.A., 2008
Identification and Treatment of Cerebral Aneurysms After Sentinal HEadache
Neurol 42:1118-1119, Hughes,R.L., 1992
When the Headache is Ominous
Emerg Med Nov 1973, pp 87., Joynt,R., 1973