Case clustering is of indeterminate significance for rare diseases, because clusters may occur by chance alone

Can someone give me one specific health problem, and explain it. !

Which of these pieces of safety equipment should be worn when operating a chainsaw

Ms green is at checkout window of your busy orthopedic office . her charges for today are $125.00. her group insurance pays 75% of all usual and customary charges and she has a $50.00 co-pay. she has not met her deductible for the plan year. what does she owe for today’s visit?