Tham khảo Co thắt phế quản

  1. Marsh, Alex; Gordon, David; Heslop, Pauline; Pantazis, Christina (2000). “Housing Deprivation and Health: A Longitudinal Analysis”. Housing Studies 15 (3): 411. doi:10.1080/02673030050009258
  2. Haggerty, Catherine L.; Ness, Roberta B.; Kelsey, Sheryl; Waterer, Grant W. (2003). “The impact of estrogen and progesterone on asthma”. Annals of Allergy, Asthma & Immunology 90 (3): 284–91; quiz 291–3, 347. PMID 12669890. doi:10.1016/S1081-1206(10)61794-2
  3. Hatfield. “Asthma in Women”