puits (1) vallée (1) risque (1) ADN (1) ligne (1) ville (1) analyse (1) Sucre (1) The Valley (1) Forms (1) Identification (1) Mestizos (1) White (1) Vaccines (1) Tribes (1) Risk (1) Population (1) Impact (1) Identification (1) Ethnic groups (1) DNA (1) Andes (1) Identification (1) Population (1)