function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bousquet, Yves', 40],
    ['Johnston, M. Andrew & Waite, Evan S. & Wright, Ethan R', 2],
    ['Keller, Oliver & Schnepp, Kyle E. & Ashman, Krystal L.', 4],
    ['Liebherr, James K. & Casale, Achille & Erwin, Terry L.', 1],
    ['Putzeys, J.', 1],
    ['Rajab, Abubakarsidiq Makame', 55],
    ['Shpeley, Danny & Hunting, Wesley & Ball, George E.', 43]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=146)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);