function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Filippova, Nina & Zvyagina, Elena & Rudykina, Elena', 2],
    ['Fu, Hao-Yu & Fan, Li', 2],
    ['Guevara-Guerrero, Gonzalo & Bonito, Gregory & Smith, Matthew E.', 2],
    ['Harmaja, Harri', 3],
    ['Jarvis, Charlie', 11],
    ['Leonardi, Marco & Iotti, Mirco & Mello, Antonietta', 4],
    ['Li, Lin & Wan, Shan-Ping & Wang, Yun & Thongklang, Naritsada', 3],
    ['Linnaeus, Carolus', 34],
    ['Lu, Jin-Rong & Yu, Feng-Ming & Zhou, De-Qun & Lu, Zhi-Yun', 2],
    ['Müller, Otto Friedrich', 2],
    ['Pacaud, Jean-Michel', 3],
    ['Sammut, Carmel & Alvarado, Pablo & Vooren, Nicolas Van', 6],
    ['Wang, Xin-Cun & Liu, Tie-Zhi & Chen, Shuang-Lin & Li, Yi', 5],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 21],
    ['Xu, Yu-Yan & Yan, Xiang-Yuan & Li, Ting & Fan, Li', 4],
    ['Other (39)', 46]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=150)',
    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);