Air travel during pregnancy: an update review and practical recommendation
R. Csorba, P. Tsikouras, A. Bothou, S. Zervoudis, G. Iatrakis, X. Anthoulaki, D. Deuteraiou, A. Chalkidou, G. F. von Tempelhoff
Clinical and Experimental Obstetrics & Gynecology . 2019, (6): 862 -866 .  DOI: 10.12891/ceog4885.2019