function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cedric A. Collingwood & Donat Agosti & Mostafa R. Sharaf', 1],
    ['Christoph Germann', 1],
    ['Collingwood, C. A.', 2],
    ['Crawley W. C.', 1],
    ['Forel, A.', 10],
    ['Forel, Auguste-Henri', 1],
    ['Heterick, Brian E. & Shattuck, Steve', 87],
    ['Hosoishi, S. & Rahman, Md M. & Heng, S.', 1],
    ['Mayr, G.', 5],
    ['Wheeler, William Morton', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=110)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);