Australia's Sigma slashes FY11 profit forecast MELBOURNE, July 15 (Reuters) - Australia's Sigma Pharmaceuticals cut its full-year profit forecast by about 31 percent on Thursday while it is trying to persuade South Africa's Aspen Pharmacare to improve its $573 million takeover offer. Read more on Reuters via Yahoo! Singapore News … [Read more...] about Australia’s Sigma slashes FY11 profit forecast