title: Response to letters regarding article, "Clinical usefulness, angiographic characteristics, and safety evaluation of intracoronary acetylcholine provocation testing among 921 consecutive white patients with unobstructed coronary arteries".
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Ong
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Anastasios
authors.initials: A
authors.lastname: Athanasiadis
authors.affiliation: Clinical Trials Unit, St. George's University of London, London, United Kingdom.
authors.forename: Gabor
authors.initials: G
authors.lastname: Borgulya
authors.affiliation: Cardiovascular Sciences Research Centre, St. George's University of London, London, United Kingdom.
authors.forename: Ismail
authors.initials: I
authors.lastname: Vokshi
authors.affiliation: Cardiovascular Sciences Research Centre, St. George's University of London, London, United Kingdom.
authors.forename: Rachel
authors.initials: R
authors.lastname: Bastiaenen
authors.affiliation: Cardiovascular Sciences Research Centre, St. George's University of London, London, United Kingdom.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Kubik
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Hill
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Tim
authors.initials: T
authors.lastname: Schäufele
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Heiko
authors.initials: H
authors.lastname: Mahrholdt
authors.affiliation: Cardiovascular Sciences Research Centre, St. George's University of London, London, United Kingdom.
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Kaski
authors.affiliation: Department of Cardiology, Robert-Bosch-Krankenhaus, Stuttgart, Germany.
authors.forename: Udo
authors.initials: U
authors.lastname: Sechtem
mesh_terms: D000109:Acetylcholine; D017023:Coronary Angiography; D003329:Coronary Vasospasm / Q000175:diagnosis*; D003331:Coronary Vessels / Q000187:drug effects*; D005260:Female; D006801:Humans; D008297:Male; D017202:Myocardial Ischemia / Q000175:diagnosis*
chemical_list: D000109:Acetylcholine