I am preparing a manuscript for submission to Journal of Cardiology. The author instructions say "Please provide inclusive page numbers, e.g., 51-9." What does that mean? How else can you cite page numbers.
The alternative is to include only the first page number, which is sufficient to clearly identify the referenced article but in this case the journal is wanting to use a style that includes the end page.
They probably included this in the directions because they cannot reformat references with missing info, and to save their publication staff the time of pestering the authors for the info at a later date.
Depending on the context, page numbers can be reported also in other forms, e.g. from 51 to 59. They thus want the authors to use an inclusive page range (meaning that all the numbers from the first to the last reported are included; I suppose it's for the bibliography) with the page numbers separated by a dash (typically a en dash) and, from the given example, I would say that they also want the authors to use an abbreviated form, that is, 51-9 instead of 51-59.