https://www.google.com/search?q=hiv+window+period+2019&prmd=niv&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj13taLxI_lAhXvAxAIHXlXDGoQ_AUoAnoECBAQAg&biw=360&bih=560&dpr=3#imgrc=lqErg5UM-P3R0M Şu linke de bi göz atın isterseniz. @ Exsalvador
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