Joelsson L. S., Berglund A., Wånggren K., Lood M., Rosenblad A., and Tydén T. “Do Subfertile Women Adjust Their Habits When Trying to Conceive?”. Upsala Journal of Medical Sciences, vol. 121, no. 3, May 2016, pp. 184–191, doi:10.1080/03009734.2016.1176094.