1. 2012. ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT01052142?term.
2. 2015a. ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT01095848?term.
3. 2015b. ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT01679470?term.
4. 2015c. ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT00409188?term.
5. 2016a. ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT00848042?term.