Interest in African cardiology has been focused on its two main peculiarities. One is the welldocumented rarity of coronary thrombosis. The other is the prevalence of cardiomyopathies of unknown origin among indigenous Africans. While both are receiving much publicity their extent has been difficult to assess. In the relatively undeveloped areas, where their incidence might be of greatest inter...

where Bn, n ≥ 0, denotes the nth Bernoulli number, and where σν(n) = ∑ d|n d ν . The latter two representations in (1.1) can be established by using the Lipschitz summation formula or Fourier analysis. For these and other basic properties of Eisenstein series, see, for example, R. A. Rankin’s text [41, Chap. 6]. In Ramanujan’s notation, the three most relevant Eisenstein series are defined for ...

BACKGROUND An increased incidence of sudden infant death syndrome (SIDS) at weekends has been previously noted, although it has not been found in all studies. Where a weekend effect has been found it is most prominent on Sundays. AIM To identify the magnitude of this effect in British data before and after the fall in prevalence associated with the "back to sleep" campaign. METHODS Aggregat...