<prompt> Translate the following text to EnglishGale T. JaW. Welty, tofauti katika kugundua matumizi ya pombe katika idadi ya kabla ya kuzaliwa katika Northern Plains Indian Reservation kwa kutumia mbinu mbalimbali za uthibitisho.  <response>: 6. Gale T, Ja W, Welty T. Differences in detection of alcohol use in a prenatal population on a Northern Plains Indian Reservation using various methods of ascertainment. 