 amended checks for gestation period to be within 1 year of fathers death
 amended checks for gestation period to be within 1 year of fathers death

tidied up code, remove constants and made conditional more readable

PurityControl/osra,AgileVentures/osra,b264/osra,SergiosLen/osra,guangfanxu/osra,PurityControl/osra,guangfanxu/osra,motasem-salem/osra,motasem-salem/osra,NikitaAvvakumov/osra,NikitaAvvakumov/osra,SergiosLen/osra,gmunumel/osra,b264/osra,motasem-salem/osra,robbiejackson/osra,jmorcate/osra,robbiejackson/osra,robbiejackson/osra,NikitaAvvakumov/osra,SergiosLen/osra,AgileVentures/osra,razorcd/osra,guangfanxu/osra,PurityControl/osra,gmunumel/osra,ZmagoD/osra,razorcd/osra,ZmagoD/osra,evo2013/osra,jmorcate/osra,AgileVentures/osra,razorcd/osra,ZmagoD/osra,jmorcate/osra,evo2013/osra,b264/osra,gmunumel/osra