function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Berry, F. H.', 1],
    ['Bertin, L. & Dollfus, R. P.', 1],
    ['Bleeker, Pieter', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Delloro, Emmanuel S. Jr. & Babaran, Ricardo P. & Gaje, Arnold C.', 1],
    ['Hildebrand, S. F.', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 1],
    ['Jenkins, O. P.', 1],
    ['Jordan, David Starr & Seale, A.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 3],
    ['Ogilby, J. D.', 1],
    ['Wakiya, Y.', 1],
    ['Walford, L. A. & Myers, G. S.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);