If a hair is pulled out prematurely but the hair follicle isn’t damaged (brushing, drying your hair too roughly with a towel), does the next hair begin growing ‘immediately’, or does it wait until the next hair cycle (which could be many months away)?
Also if a hair is pulled out prematurely is there a risk that the hole in the skin could heal / close up before the next hair has a chance to grow out, especially if the hair is miniaturized?

If you pull out a miniaturized hair, it might be permanent (depends upon where it is in its loss cycle). Generally, pulled hair (healthy hair that is) will return fairly quickly after it is pulled out and the pore that it exits from does not close up.

Male pattern hair loss has a strong genetic influence, but we have never compared race by city. From the literature I have read, there is no suggestion that the people of China have less balding than Europeans. One Chinese friend of mine has hair like former US President Bill Clinton in hairline shape and location. The hair is very wavy, not straight like many Asians and he says in his home town in China, this is the way all of the people there look. I guess it is possible to find a population of people with isolated gene pools, especially in geographically protected or isolate areas where inherently the population does not carry a specific gene for baldness. Someone should study it. 