खोला सानजा हादोरसा , साहा केरलायनानि दिउक मुलुकफरायसालि मेदिकेल फरायसालिनि नायबिजिरग्राफोरा नरवेनि 1967 आरो 1988 नि गेजेरनि 1 . 16 मिलियन जोनोमखौ नायबिजिरदोंमोन आरो आयदाफोरखौ 2002 सिम उनसंदोंमोन ।
Researchers at the Duke University medical school in the southeastern state of North Carolina studied 1 16 million birth in Norway between 1967 and 1988 and followed the subjects through 2002 .