function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alcock, Alfred William', 1],
    ['Amaoka, Kunio & Ho, Hsuan-Ching', 3],
    ['Amaoka, Kunio & Parin, Nik V.', 1],
    ['Amaoka, Kunio & Yamamoto, E.', 1],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 1],
    ['Foroshchuk, V. P.', 1],
    ['Hensley, Dannie A. & Smale, M. J.', 1],
    ['Kuronuma, K.', 1],
    ['Nielsen, Jørgen G.', 1],
    ['Norman, J. R.', 1],
    ['Shen, Shih-Chieh', 1],
    ['Voronina, Elena P. & Volkova, Galina A.', 2],
    ['von Bonde, C.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);