title: Ascertainment bias increases estimate of risk of GERD in depressed patients.
authors.forename: R D
authors.initials: RD
authors.lastname: Madanick
authors.forename: M D
authors.initials: MD
authors.lastname: Long
authors.forename: N J
authors.initials: NJ
authors.lastname: Shaheen
mesh_terms: D015982:Bias; D003866:Depressive Disorder / Q000378:metabolism; D005764:Gastroesophageal Reflux / Q000523:psychology*; D006801:Humans