1. The male to female ratio at birth;Grech;Early Hum. Dev.,2015
2. Grech V. The sex ratio at birth – historical aspects. Early Hum. Dev. B2.
3. Grech V, Mamo J. What is the sex ratio at birth? Early Hum. Dev. B3.
4. Fukuda M, Fukuda K, Mason S, Shimizu T, Yding Andersen C. Effects of earthquakes and other natural catastrophic events on the sex ratio of newborn infants. Early Hum. Dev. B4.
5. Fukuda M, Fukuda K. Climate change, Tohoku earthquake and sex ratio of fetal death & birth. Early Hum. Dev. B5.