^McGreal، Chris (1 أكتوبر 2010). "US says sorry for 'outrageous and abhorrent' Guatemalan syphilis tests". الغارديان. مؤرشف من الأصل في 2019-05-14. اطلع عليه بتاريخ 2010-10-02. Conducted between 1946 and 1948, the experiments were led by John Cutler, a US health service physician who would later be part of the notorious Tuskegee syphilis study in Alabama in the 1960s.
^John Charles Cutler (1915–2003) in the Hubbard Family Tree، أنسيستري.كوم{{استشهاد}}: الوسيط |تاريخ الوصول بحاجة لـ |مسار= (مساعدة)