| 000 | 00549nam a2200193Ia 4500 | ||
|---|---|---|---|
| 008 | 140128s9999 xx 000 0 und d | ||
| 040 | _besp Biblioteca CIESS | ||
| 041 | _aing | ||
| 082 | _a614.4028.E549c | ||
| 100 | _aElwood, J Mark | ||
| 245 | _aCausal relationships in medicine. A practical system for critical appraisal. | ||
| 260 | _aSingapore | ||
| 260 | _bOxford University Press | ||
| 260 | _c1988 | ||
| 300 | _axi, 332 p., 24 cm. | ||
| 500 | _a027646 | ||
| 650 | _aEnfermedades transmisibles. | ||
| 650 | _aEpidemiología | ||
| 999 |
_c15559 _d15559 |
||