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Description
I think if you know its going to be 2 months you can plan ahead once you start so its not actually that difficult just a bit of a pain if you dont know

Physiology 72, 16041610

Wilmes A, Limonciel A, Aschauer L, Moenks K, Bielow C, Leonard M O, Hamon J, Carpi D, Ruzek S, Handler A and Schmal O 2013 Application of integrated transcriptomic, proteomic and metabolomic profiling for the delineation of mechanisms of drug induced cell stress

In addition, many natural substances (such as root and bark extracts) have not been thoroughly studied and may in fact contain hormonally active chemicals that are actually detrimental to male fertility
