We give a brief survey of subnormality and hyponormality of Toeplitz operators on the vector-valued Hardy space of the unit circle. We also solve the following subnormal Toeplitz completion problem: Complete the unspecified rational Toeplitz operators (i.e., the unknown entries are rational Toeplitz operators) of the partial block Toeplitz matrix

Serum thyrotropin (TSH) concentrations were measured serially in 14 heart-transplant recipients (group 1) and 21 patients undergoing coronary artery bypass surgery (group 2), all without thyroid disease, and randomly in 158 patients hospitalized for various other nonthyroidal illnesses, including 144 judged euthyroid (group 3), six with increased FT4 and (or) T3 (group 4), and eight classified ...

BACKGROUND Pernicious anaemia is undeniably associated with vitamin B12 deficiency, but the association between subnormal vitamin B12 concentrations and anaemia in older people is unclear. The aim of this systematic review was to evaluate the association between subnormal vitamin B12 concentrations and anaemia in older people. METHODS Clinical queries for aetiology and treatment in bibliograp...

OBJECTIVE It has been suggested that the high prevalence of subnormal free testosterone concentrations, along with low or inappropriately normal gonadotropins in men with type 2 diabetes, may be the result of an increase in plasma estradiol concentrations secondary to an increase in aromatase activity in the adipose tissue that leads to the suppression of the hypothalamo-hypophyseal-gonadal axi...

These welcome additions to the scanty literature on their subject both come from Australasia, witnessing to the increasing concern felt there for the welfare of children unsuitable for school. In the first, much detailed information and advice on training given clearly and simply, especially in preparing a child for Emission to an Occupation Centre. A chapter on "Occupational Possibilities" des...