function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Banks, Nathan', 3],
    ['Chamberlin, Joseph Conrad', 1],
    ['Gao, Zhizhong & Zhang, Kaiquan & Zhang, Feng', 1],
    ['Harvey, Mark S.', 1],
    ['Heurtault, Jacqueline', 1],
    ['Sammet, Kaarel & Kurina, Olavi & Klompen, Hans', 1],
    ['Schawaller, Wolfgang & Shear, William A. & Bonamo, P. M.', 1],
    ['Sivaraman, S.', 1],
    ['Ćurčić, B. P. M.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    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);