Article History
Received: 3 July 2017
Accepted: 10 January 2018
First Online: 20 January 2018
Compliance with ethical standards
:
: Ronnie Fass was an advisor to Ironwood, Mederi Therapeutics, Allergan, Ethicon, Horizon, speaker for AstraZeneca, Takeda, Mederi Therapeutics and Horizon, and performed research for Ironwood and Salix. The authors Gerson Domingues and Joaquim Prado P. Moraes-Filho declare no conflict of interest.