O

Oestern H-J, Trentz O, Hempelmann G, Trentz OA, Sturm J
Cardiorespiratory and metabolic patterns in multiple trauma patients
Resuscitation 1979; 7: 169 - 184

Olmstead EG, Roth DA
The relationship of serum sodium to total serum osmolarity: A method of distinguishing hyponatremic states
Am J Med. Sci 1957; 233: 392 - 399