Sujeito
- Odquist, Bertil1
- Oliveira, Mario Jose de1
- Op de Coul, Paul1
- Orthopedics1
- Pappel, Otto1
- Pilcher, Lewis Stephen, 1845-19341
- Poupa, Otakar1
- Public Health Service (U.S.)1
- Redslob, Edmond1
- Rougier, Jacques1
- Saez, Enrique1
- Sajfert, Milos1
- Schleich, Gustav1
- Schmidt, Frederick Kenneth1
- Schulze-Oben1
- Semans, Mary Duke Biddle Trent1
- Simon, Medgyes1
- Smet, Herman1
- Stead, Eugene A.1
- Stereotactic1