Results of the lactose load test in middle-aged and elderly inhabitants of the Estonian SSR
Kuusk, I.E.; Villako, K.P., 1976: Results of the lactose load test in middle-aged and elderly inhabitants of the Estonian SSR. Uchenye Zapiski Tartuskogo Gosudarstvennogo Universiteta (385): 129-133
When glucose was estimated in blood of 111 persons 41 to 70 years old before and after ingestion of 50 g lactose, 37 were judged deficient in lactase.