Revenue from royalties was $0.7 million and $0.4 million for the three months ended March 31, 2011 and 2010, respectively. Total gross profit increased in the initial quarter of 2011 to $2.1 million compared to $2.0 million in 2010 2010. The increase in the one fourth was primarily because of the increase in royalties. Total operating expenses were around $3.5 million and $3.6 million for the 1st quarters of 2011 and 2010, respectively.In the study, children reported more frequent sleep issues than their parents acknowledged. For instance, 45 % of kids said they often had difficulties drifting off to sleep, while only 17 % of parents reported this to become the case in their children. Related StoriesNew scientific trial on breast cancer may help deal with and control diseaseTesting amniotic liquid could guidebook doctors to make delivery preparing decisions for preterm birthsMedUni Vienna experts discover genetic cause of a rare diseaseThe authors speculate that there could be many explanations because of this discrepancy.