Shanghai Jiao Tong University (SJTU) - MOE and Shanghai Key Laboratory of Children’s Environmental Health, Shanghai Jiao Tong University (SJTU) - School of Public Health, CAAC East China Aviation Personnel Medical Appraisal Center, Shanghai Jiao Tong University (SJTU) - International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University (SJTU) - School of Public Health, Shanghai Jiao Tong University (SJTU) - MOE and Shanghai Key Laboratory of Children’s Environmental Health, Shanghai Jiao Tong University (SJTU) - School of Public Health, China Eastern Airlines Corporation Limited, affiliation not provided to SSRN, China Eastern Airlines Corporation Limited, OTT Airlines, CAAC East China Aviation Personnel Medical Appraisal Center, CAAC East China Aviation Personnel Medical Appraisal Center, CAAC East China Aviation Personnel Medical Appraisal Center, Malmö University, Yokohama City University, Shanghai Jiao Tong University (SJTU) - International Peace Maternity and Child Health Hospital, Fudan University and Shanghai Jiao Tong University (SJTU) - School of Public Health