adverseeffects complications disasters efficiency environmentalexposure environmentalhealth extractionandprocessingindustry genderidentity healthandhygiene healthservicesaccessibility healthstatus healthsurveys laborproductivity mentalhealth methods militaryhygiene militarypersonnel naturalgas numericaldata oilandgasfields psychology socioeconomicfactors soldiers statistics stressdisorders substance-relateddisorders substanceuse traumatic women'shealth