Introduction There are different types of blood grouping systems; ABO

Introduction Urinary tract infection is among the most common bacterial

PCOS is a syndrome of ovarian dysfunction along with the cardinal features of hyperandrogenism and polycystic ovary morphology.

Polycythaemia can be defined as a venous haematocrit of 65% or more OR a venous hemoglobin concentration in excess of 22 g/dL.