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0971-5916.155597
0971-5916.155597
http://dx.doi.org/10.4103/0971-5916.155597
Matching for risk factors in case control studies.
P356
Q42576435-31268CD6-AD16-43C6-9EE5-73579604E901
P356
0971-5916.155597
http://dx.doi.org/10.4103/0971-5916.155597