Hi, <br/><br/>I am hoping that someone can help me. <br/>I am reviewing a report that contains the following line: <br/><br/>'No subjects took a concomitant medication.' <br/><br/>should this be amended to: <br/><br/>No subject took a concomitant medication.' <br/><br/>Is there a general rule for when to use singular or plural nouns following 'no'? <br/><br/>'No man is an island.' <br/>'No children allowed in the bar' or 'No child allowed...' <br/>'No cars can park here.' or 'No car can park here.' <br/><br/>Is it to do with action on an individual level or on a group level? <br/><br/>Thanks for any help. <br/><br/>Kieran.