Arthritis Care & Research is soliciting manuscripts for a themed issue addressing the epidemiology of the rheumatic diseases. Manuscripts covering a broad range of topics related to the major theme are invited; for example, the risk factors for the onset of specific rheumatic conditions, prevalence data on such conditions, as well as the factors affecting progression of rheumatic diseases. Submissions from a range of disciplines relevant to epidemiology are welcome, (i.e., risk factors for the onset of specific conditions may cover topics ranging from genetics to social circumstances) and we will entertain both original research articles and review articles. The issue will include regular submissions as well, but a certain number of pages will be reserved for manuscripts accepted in response to this solicitation. All manuscripts will be peer-reviewed. All types of manuscripts (e.g., original articles, contributions from the field, case studies, trainee rounds, reviews) are included in this solicitation. The deadline for submission is January 15, 2009. For further information, contact the editors of Arthritis Care & Research, Edward H. Yelin, PhD (Ed.Yelin@ucsf.edu) or Patricia P. Katz, PhD (Patti.Katz@ucsf.edu).