（呼叫免费电话）Toll-free: 1-866-615-NIMH (6464)
面临的挑战包括资助呼叫中心、分配免费的家庭艾滋病毒检测，和提醒病人注意治疗预约的短信提示的到位。
Challenges include funding call centers, distributing free home HIV tests, and putting in place text messaging to remind patients of their medical appointments.
大多数南非人用的是预付话费的手机，其服务计划中就包括免费的“请呼叫我”短信。
The majority of South Africans have prepaid phones, whose plans include free "please call me" text messages.
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