TY  - CHAP
M1  - Book, Section
TI  - Chapter 137. Principles of Epidemiology and Research Design
A1  - Osterhoudt, Kevin C.
A2  - Nelson, Lewis S.
A2  - Lewin, Neal A.
A2  - Howland, Mary Ann
A2  - Hoffman, Robert S.
A2  - Goldfrank, Lewis R.
A2  - Flomenbaum, Neal E.
PY  - 2011
T2  - Goldfrank's Toxicologic Emergencies, 9e
AB  - Advances  in  medical  toxicology  are  achieved  through  the  scientific  method  using  observations,  derived  from  cases  of  poisoning  and  nonpoisoning  due  to  xenobiotic  exposures,  to  generate  hypotheses.  Subsequent  research  questions  are  analyzed  with  epidemiological  investigation,  and  preliminary  studies  are  examined  with  methodological  scrutiny.  Initial  analytical  techniques  are  improved,  and  confirmatory  studies  are  performed.  Ultimately,  models  relating  cause  to  effect  are  formulated.  
SN  - 
PB  - The McGraw-Hill Companies
CY  - New York, NY
Y2  - 2021/01/18
UR  - accessemergencymedicine.mhmedical.com/content.aspx?aid=6534443
ER  -