|
jameslindlibrary.org
|
|
Records
Methodological context for: Neuwirth I, Chilton NW (1951). The clinical effectiveness of different concentrations of procaine for mandibular extractions. Oral Surgery, Oral Medicine and Oral Pathology 4:383-387.
- Allocation bias
- Differences between the people compared
- Observer bias
- Differences in the way treatment outcomes are assessed