Table 2

 Publication history of letter writers

No of letters publishedNo of authors
Each author’s other publications were scrutinised through PubMed and the nature of those publications checked. In four cases the surname and initials were too common to allow separation from many other authors with identical names. These authors were excluded from the PubMed analysis.
18
22
36
40
51
61
71
81
151
571
1921