function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aston, Paul', 1],
    ['Bousquet, Yves', 12],
    ['Casale, Achille', 8],
    ['Casale, Achille & Shi, Hongliang', 25],
    ['Desender, Konjev & Casale, Achille & Baert, Leon', 1],
    ['Faisal, Mohammad & Singh, Sudhir', 1],
    ['Liebherr, James K. & Casale, Achille & Erwin, Terry L.', 1],
    ['Shi, Hongliang & Casale, Achille', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=55)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);