The phrase "addition difficulty" is not correct and does not convey a clear meaning in written English.
It may be intended to describe challenges related to addition, but it lacks clarity and proper context.
Example: "Students often face addition difficulty when they first learn to add larger numbers."
Alternatives: "difficulty with addition" or "challenges in addition".
In addition, difficulty to obtain iPSC derived transplantable cell types is still a major obstacle to developing clinical application of iPSCs.
In addition, difficulty of disruption was also encountered for the difference in growth phase and culture medium.
In addition, difficulty in accessing tertiary health services due to the poor referral systems that characterise most developing countries also prevents early presentation and detection of the cause of bleeding.
In addition, difficulties in communication are associated with violent behaviors in school and also with both physical and psychological symptoms; while a better parental communication is associated with feeling happier (Matos and Equipa Aventura Social 2000).
In addition, difficulties in measuring the altitude of flight emissions have motivated numerous studies focusing on the generation and identification of emissions in the vicinity of the airports such as Atlanta, Heathrow, New York, Los Angeles, Zurich, and Copenhagen [7, 8, 9, 10, 11, 12, 13].
In addition, difficulties associated with implementation of the data acquisition system for acquiring output image data from the multiple image sensors used in the detector also need to be addressed.
In addition, difficulties with developing good routines to execute the recruitment process were reported.
In addition, difficulties with smooth pursuit have been found in individuals suffering from schizophrenia 20.
In addition, difficulties were experienced with explaining the vignettes, some of which included scenarios possibly foreign to rural settings.
In addition, difficulties were encountered in retrieving some of the patients' records due to the retrospective nature of the study.
In addition, difficulties in procuring machines, materials and restrictions on mobility and marketing mean that girls are not likely to embark on a major entrepreneurial enterprise.
