गामबियायाव , जेरै , मेकग्रेगरया दिन्थिबायदि 1973 नि गोनांसिन , 50 जौखोनदो गामिनि गथ'साया बा बोसोरफोरनि बैसो सिगांनो थैबाय ।
In the Gambia for example McGregor has shown that prior to 1973 50 per cent of rural children had died before the age of five years .