cost of drugs of a prescription from the internet hospital is about ¥60 on average, only a quarter of the average cost of drugs from a top-level hospital. 6 The i nternet hospital programme is still in the exploratory stage, and many problems remain to be solved, such as the incorporation of internet medical services into health insurance programmes, surveillance and quality control, the applicability of internet diagnoses for some diseases, possible medical disputes, and long-term return on investment. Nevertheless, this programme is developing at a substantial speed in China. The expansion of internet medical services in China suggests a direction for future health care.
With the wide availability of the internet and decreasing cost of distant medical services over time, the internet hospital model has implications for many developing countries, where medical services and resources are concentrated in big cities. It also has implications for the health of migrants and cross-country health care. Besides, the system could improve health education and raise health awareness among the wider public, since patients can easily gain access to professional health consultancy.
We declare no competing interests. 
A new approach to outpatient service delivery has been developed in China. Patients go to a medical consultation facility near their home and meet through the internet with a doctor who is based in a top-level hospital in a big city. The doctor asks the patient about his or her state of health via a webcam, through an instant chatting platform designed for the internet hospital. The patient answers questions and shows or sends images of his or her medical checks to the doctor through the internet. Meanwhile, data for the patient's body temperature, blood pressure, and blood glucose concentrations can be obtained by machine-operated devices on site and uploaded to the diagnostic system. The doctor then makes a diagnosis and prescribes for the patient online. A few minutes later, the prescription is printed out and can be used to buy drugs at the consulting facility or another drug store. This outpatient service is in use in Guangdong province, China, where the fi rst offi cially approved so-called internet hospital went online on Oct 25, 2014. The internet hospital consists of four clinics operated by doctors from the Second People's Hospital of Guangdong Province, an online platform operated by a medical technology company, and a network of medical consulting facilities based in clinics in rural villages, community health centres, and large pharmacy chain stores. By the end of 2014, the internet hospital was dealing with almost 200 patients and issuing about 120 prescriptions every day. By April, 2015, the number of patients per day had already surpassed 500, and about 300 (60%) of these patients needed prescriptions. 1 Within several months, the network of internet medical consulting facilities has expanded to more than 1000 sites, covering 21 municipalities in Guangdong province. 1 Since the severe acute respiratory syndrome epidemic in 2003, the Chinese government has been rebuilding the three-tier healthcare system and investing in primary health-care institutions. Its ongoing health-care reform has greatly improved primary healthcare services, yet many people still complain that health-care access is diffi cult and medical costs are expensive. One of the main contributing factors to poor access to high-quality health care is that patients in China can choose a medical institution and a doctor freely, and they tend to go to high-level hospitals even for mild symptoms, effectively overcrowding those hospitals. 2 Although many disorders could be treated in primary healthcare institutions with convenient access and at an affordable price, many patients are unwilling to go to these institutions owing to their lack of confidence in the health professionals' skills and the quality of health care provided. 3 Indeed, skilled doctors are unwilling to work at the community level and in remote rural areas for financial and professional reasons. The internet hospital seems to provide a feasible solution to meet demands for high-quality outpatient services conveniently.
The internet enables people to overcome geographical obstacles to health-care access. Patients just need to visit their community health centre, village clinic, or a pharmacy nearby to obtain a consultancy and diagnosis from skilled doctors based in big cities. Doctors from the internet hospital can spend 10 min or more to communicate with each patient, whereas a clinic consultancy at a top-level hospital normally lasts only a few minutes. 4 The satisfaction score is high according to the patients' online assessment after the consultancy. 5 Besides, it is much cheaper than outpatient costs for traditional hospital visits. The present