Implantable drug delivery systems (IDDS) are long term acting controlled release systems.
植入型给药系统适用于长期给药和靶向给药。
2
IDDs still constitute a public health problem throughout urban areas in the Sudan and iodine deficiency appears to be the main etiological factor involved.
碘缺乏症仍然是苏丹城市地区的公共健康问题，并且碘缺乏似乎是其中的主要病因。
3
To describe the status of iodine deficiency disorders (IDDs) in the Sudan more than 25 years after the initiation of IDD control programmes and to explore the causes of endemic goitre in the country.