In its classic definition, by FranÃ§ois-Louis Ganshof (1944), feudalism describes a set of reciprocal legal and military obligations among the warrior nobility revolving around the three key concepts of lords, vassals and fiefs.
The exact cause of intracardiac echogenic foci remains unclear; however, they appear to be caused by small deposits of calcium in the papillary muscle of the fetal heart.
Asking the pharmacist. When it does occur, it may be caused by blood dyscrasias, sickle-cell disease, anticoagulation therapy, local trauma, leukemia, radiation therapy, or drug abuse; also, some cases are idiopathic. Sudden onset of sensorineural hearing loss secondary to intralabyrinthine hemorrhage: MRI findings.