Signs and symptoms. The majority of HPV infections do not cause symptoms or disease and resolve spontaneously. However, persistent infection with specific types of HPV (most frequently types 16 and 18) may lead to precancerous lesions.
1. Tokyo, Japan: Tokyo tops the list and remains the world's largest city with 38 million dwellers. Though the UN has predicted a decline in the city's population, it will still remain the world's most populous city in 2030 with 37 million inhabitants. 2. Delhi, India: With 25 million, the Indian capital is the second-most populated city in the world.
Surprisingly, none of China's cities make the list of the top 30 most densely populated cities in the world, most of which are in India, the Philippines, France and other countries. Macau, however, is the 36th most densely populated city with a density of 18,568 people per square kilometer (48,092 per square mile).he density figures change dramatically when you look at the largest urban areas, however. Shanghai, the largest city in the country and the world, has a population density of 3,700 people per square kilometer, or 9,700 people per square mile.