Template:NHJ
| Author(s) | {{{mainauthor}}} | |
| Netherlands Heart Journal edition: | {{{edition}}} | |
| These Rhythm Puzzles have been published in the Netherlands Heart Journal and are reproduced here with permission from the publisher. | ||
| Author(s) | {{{mainauthor}}} | |
| Netherlands Heart Journal edition: | {{{edition}}} | |
| These Rhythm Puzzles have been published in the Netherlands Heart Journal and are reproduced here with permission from the publisher. | ||