I would tell him that his health problems are completely confidential and that I would not tell his wife. If the wife asked me, I would say to talk to your husband he will explain everything.
<span>True, the average menstrual cycle does indeed last around 28 days. This varies between women, however, and can range from between 21 and 35 days after puberty. The menstrual cycle is controlled by fluctuating hormones in the female body.</span>
Bone marrow contains blood I think, so it would be considered a donor procedure since you're donating blood.
(Anaphylaxis) is used to treat an anaphylactic reaction to a medication.