DISEASE INCIDENCE AND SEASON OF BIRTH: A NOTE ON METHODOLOGY.

[1]  B. Dijkstra.  ORIGIN OF CARCINOMA OF THE BRONCHUS. , 1963, Journal of the National Cancer Institute.

[2]  A. Guthkelch,et al.  Studies in Spina Bifida Cystica , 1962, British journal of preventive & social medicine.