An investigation by ProPublica found that at least 21 doctors have been paid more than $500,000 for speeches and consulting by drugs manufacturers since 2009, with half of the top earners working in psychiatry, and about $2 billion in total paid to doctors for such services. AstraZeneca, Johnson & Johnson and Eli Lilly have paid billions of dollars in federal settlements over allegations that they paid doctors to promote drugs for unapproved uses. Some prominent medical schools have since tightened rules on faculty acceptance of such payments by drug companies.
Billions of dollars have been paid by which companies?
AstraZeneca, Johnson & Johnson and Eli Lilly

In addition to and independent of the division into suras, there are various ways of dividing the Quran into parts of approximately equal length for convenience in reading. The 30 juz' (plural ajza') can be used to read through the entire Quran in a month. Some of these parts are known by nameswhich are the first few words by which the juz' starts. A juz' is sometimes further divided into two hizb (plural ahzab), and each hizb subdivided into four rub al-ahzab. The Quran is also divided into seven approximately equal parts, manzil (plural manazil), for it to be recited in a week.
What division of the Quran is used for a month-long reading?
juz'

Most mature clitellates (the group that includes earthworms and leeches) are full hermaphrodites, although in a few leech species younger adults function as males and become female at maturity. All have well-developed gonads, and all copulate. Earthworms store their partners' sperm in spermathecae ("sperm stores") and then the clitellum produces a cocoon that collects ova from the ovaries and then sperm from the spermathecae. Fertilization and development of earthworm eggs takes place in the cocoon. Leeches' eggs are fertilized in the ovaries, and then transferred to the cocoon. In all clitellates the cocoon also either produces yolk when the eggs are fertilized or nutrients while they are developing. All clitellates hatch as miniature adults rather than larvae.
What annelid group includes leeches and earthworms?
clitellates