passages.id: split_8_test_3359_passage
passages.type: progene_text
passages.text: Apolipoprotein E genotypes were determined in four population groups ( Punjabi Sikhs , Punjabi Hindus , Maria Gonds and Koch , total individuals = 497 ) of India and three regionally sub - divided British populations ( Nottinghamshire , East Midlands and West Midlands , total individuals = 621 ) .