function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Di, Zhi-Yong & Cao, Zhi-Jian & Wu, Ying-Liang & Zhu, Lin', 2],
    ['Fet, Victor & Kovařík, František & Gantenbein, Benjamin', 13],
    ['Karataş, Ayşegül & Karataş, Ahmet', 1],
    ['Kovařík, František', 1],
    ['Kovařík, František & Fet, Victor & Gantenbein, Benjamin', 29],
    ['Lourenço, Wilson R. & Qi, Jian-Xin & Zhu, Ming-Sheng', 2],
    ['Mirshamsi, Omid & Sari, Alireza & Elahi, Elahe', 3],
    ['Navidpour, Shahrokh & Fet, Victor & Kovařík, František', 2],
    ['Navidpour, Shahrokh & Kovařík, František & Soleglad, Michael E.', 1],
    ['Navidpour, Shahrokh & Soleglad, Michael E. & Fet, Victor', 2],
    ['Novruzov, Nizami E. & Kovařík, František & Fet, Victor', 2],
    ['Sun, Dong & Zhu, Mingsheng', 3],
    ['Tang, Victoria & Liu, Zhenbang & Graham, Matthew R.', 2],
    ['Teruel, Rolando & Fet, Victor & de Armas, Luis F.', 1],
    ['Vignoli, Valerio & Kovařík, František & Crucitti, Pierangelo', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    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);