TY - JOUR T1 - Annual and seasonal variation in the frequency of beta-haemolytic streptococcal infections. JF - Journal of Clinical Pathology JO - J Clin Pathol SP - 594 LP - 595 DO - 10.1136/jcp.38.5.594 VL - 38 IS - 5 AU - C A Morris AU - D M Berry Y1 - 1985/05/01 UR - http://jcp.bmj.com/content/38/5/594.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -