A hypothesis: Sunspot cycles may detect pandemic influenza A in 1700–2000 A.D.
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PII: S0306-9877(06)00272-6
doi:10.1016/j.mehy.2006.03.048
© 2006 Elsevier Ltd. All rights reserved.
PII: S0306-9877(06)00272-6
doi:10.1016/j.mehy.2006.03.048
© 2006 Elsevier Ltd. All rights reserved.