Seasonal fluctuations in the cervical smear rates for (pre) malignant changes and for infections: a mirror-like pattern of data from the northern and the southern hemisphere / W.J. Rietveld, M.E. Boon, J.J. Meulman
Seasonal fluctuations in the cervical smear rates for (pre) malignant changes and for infections: a mirror-like pattern of data from the northern and the southern hemisphere