english: By the 1950s, as the world's leading authority on the subject, he declared that he had seen less than 150 true cases of his syndrome while fielding referrals from as far away as South Africa.
non_english: In de jaren 1950 verklaarde hij als 's werelds toonaangevende autoriteit dat hij minder dan 150 echte gevallen  van zijn syndroom had gezien met referenties tot zelfs in Zuid-Afrika.