function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chan, Benny K. K. & Hayashi, Ryota', 1],
    ['Chan, Benny K. K. & Prabowo, Romanus Edy & Lee, Kwen-Shen', 1],
    ['Cheetham, Alan H.', 1],
    ['Hiro, F.', 1],
    ['Ren, Xian-qiu', 1],
    ['Weisbord, Norman', 1],
    ['Withers, T. H.', 7],
    ['Young, Paulo S.', 1],
    ['Zullo, V. A. & Katuna, M. P. & Herridge, K. C.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);