Studies published between 1990 and 2007 were identified through a library search of databases and an examination of reference lists of relevant publications.
A CURSORY examination of the lists of bestselling fiction around the world (published regularly in The Economist's monthly Review section) invariably throws up some cross-border curiosities.
An examination of those lists, provided by a person close to the investigations, raises a number of questions.
Examination of reference lists from included articles did not yield any additional suitable articles.
The search was also guided by a thorough examination of reference lists of original articles and review articles.
Examination of the lists of mRNA changes revealed a fundamental reprogramming of gene expression in LH cells upon acute expression of NKX3.1.
Studies were also sought through examination of reference lists and manual searching of Index Medicus and specialty journals.
Five studies [ 4, 5, 13- 15] (42% of studies but only 14% of patients) were identified by electronic searches, one [ 6] (8% of studies; 31% of patients) by hand searching, and six [ 7- 16, 16] (50% of studies; 55% of patients) by examination of reference lists and reviews.
We used a combination of web-based literature searches, personal communications, and examination of reference lists to identify common garden studies of plants in which phenotypes of individuals from native and introduced populations were compared.
A further 43 items were added from the examination of reference lists.
