Hanley, G. E., Munro, S., Greyson, D., Gross, M. M., Hundley, V., Spiby, H., & Janssen, P. A. (2016). Diagnosing onset of labor: A systematic review of definitions in the research literature. BMC Pregnancy Childbirth.

Hanley, Gillian E., Sarah Munro, Devon Greyson, Mechthild M. Gross, Vanora Hundley, Helen Spiby, und Patricia A. Janssen. "Diagnosing Onset of Labor: A Systematic Review of Definitions in the Research Literature." BMC Pregnancy Childbirth 2016.

Hanley, Gillian E., et al. "Diagnosing Onset of Labor: A Systematic Review of Definitions in the Research Literature." BMC Pregnancy Childbirth 2016.