Pediatric rheumatologists are pediatricians who have completed an additional 2-3 years of specialized training in pediatric rheumatology and are usually licensed in pediatric rheumatology. Let's now explore this window further to find out when was the best time.The egg once released have a lifespan of twelve (12)hours. The egg therefore, needs to be fertilized in this twelve- hour period for conception to occur. The sperm on the other hand can survive as much as 5 days in the reproductive duct. Joint JIA