Gattex was launched in the U.S. five weeks ago. Nader says short bowel syndrome patients are now receiving drug (he won't say how many patients, exactly) and reimbursement hasn't been a problem so far. Insurance companies are requiring pre-authorization but that was expected, he adds. NPS Pharma is providing financial assistance to patients who cannot afford their insurance co-pay. -- Reported by Adam Feuerstein in Boston. Follow Adam Feuerstein on Twitter.