function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aptroot, André & Souza, Maria Fernanda', 2],
    ['Braet, Yves & Achterberg, Cees Van', 2],
    ['Dou *, Ming-Zhu & Li *, Min & Jia, Ze-Feng', 3],
    ['Hechinger, Ryan F.', 1],
    ['Jarvis, Charlie', 1],
    ['Jia, Ze-Feng & Luecking, Robert', 10],
    ['Lafontaine, J. Donald & Sullivan, J. Bolling', 8],
    ['Lebreton, Elise & Carriconde, Fabian & Brouste, Damien', 1],
    ['Lücking, Robert & Moncada, Bibiana', 1],
    ['Lücking, Robert & Parnmen, Sittiporn & Lumbsch, Thorsten', 3],
    ['Naksuwankul, Khwanyuruan & Kraichak, Ekaphan', 6],
    ['Petrescu, Iorgu', 14],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 43],
    ['Torres, Jean Marc & Spielmann, Adriano Afonso & Aptroot, André', 5],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 48],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=152)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);