1. A Proquest literature search , including the ABI / INFORM database, returns 0 hits. 2. Food constituents have been derived both from extensive literature searches and experimental data. 3. The PL-9 was started in March 1990 with an extensive literature search . 4. The study, which included an extensive literature search , was published April 1, 1998. 5. The bias towards online sources indicates that a fuller literature search may be required. 6. I'm more interested in the general question of how to do a literature search . 7. One of Ucko's researchers, Cressida Fforde, conducted a literature search for information on the head. 8. METHODS : Computerized literature searches were performed in MEDLINE, EMBASE, AMED, MANTIS, CINAHL, PEDro, and Cochrane databases. 9. In a recent literature search on PubMed, only six titles refer to the term " autopharmacology ". 10. :" Social Work Abstracts " is a resource for literature searches in social work and social welfare.
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