Homeless PersonsLos AngelesWomenHomeless YouthWomen's HealthSubstance-Related DisordersHousingSexual BehaviorLogistic ModelsSocioeconomic FactorsRisk FactorsPublic HousingTrench FeverBartonella quintanaHealth Services Needs and DemandPregnant WomenNeeds AssessmentRunaway BehaviorBattered WomenWomen's Health ServicesCross-Sectional StudiesPediculusQuestionnairesPregnancyUnited StatesSan FranciscoSex FactorsInterviews as TopicWomen's Rights