Robertson G, Fleming A, Williams MC, Trucco E, Quinn N, Hogg R, McKay GJ, Kee F, Young I, Pellegrini E, Newby DE, van Beek EJR, Peto T, Dhillon B, van Hemert J, MacGillivray TJ. Association between hypertension and retinal vascular features in ultra-widefield fundus imaging. Open Heart. 2020 Jan 8;7(1):e001124. doi: 10.1136/openhrt-2019-001124
Pueschel SM, Rothman KJ, Ogilby JD. Birth weight of children with down's syndrome. Am J Ment Defic. 1976 Jan;80(4):442-5.