function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 2],
    ['Amato, L. H.', 2],
    ['Amato, Luis H.', 6],
    ['Berkenkamp, H. O.', 1],
    ['Berkenkamp, H. O. & Etzel, V. & Reichert, J. J. & Salvia, H.', 1],
    ['Berkenkamp, H. O. & Reichert, J. J. & Prieto, F.', 1],
    ['Carvalho, A. L. de', 1],
    ['Castello, Hugo Patricio & Lopez, Rogelio Bartolome', 2],
    ['Costa, Wilson J. E. M.', 16],
    ['Costa, Wilson J. E. M. & Brasil, Gilberto Campello', 8],
    ['Costa, Wilson J. E. M. & Lacerda, M. T. C.', 3],
    ['Ernft Ahl, Von Dr.', 9],
    ['Myers, G. S.', 3],
    ['Vaz-Ferreira, R. & Sierra de Soriano, B.', 3],
    ['Vaz-Ferreira, Raúl & Sierra-De-Soriano, Blanca', 3],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);