Problem
Analyze the given question/statements below and perform thorough research to answer what is being asked. Limit your answer based on the instruction stated on each question.
I. What are the essential health services in primary health care? Describe each in two sentences, and identify at least one existing problem in each healthcare service.
II. What are the four cornerstones of primary health care? Provide a brief description of each cornerstones.
III. Make a critique essay on the article "Scaling up Primary Health care in the Philippines: Lessons from a Systematic review of Experiences of community-based Health Programs".