function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ciobanu, Daniel Adrian & Zawierucha, Krzysztof & Moglan, Ioan', 1],
    ['Jackson, Kathy Jo A. & Meyer, Harry A.', 1],
    ['Kaczmarek, Lukasz & Grobys, Daria & Kulpa, Adam', 2],
    ['Li, Xiao-Chen & Wang, Da-Yong & Wang, Li-Zhi', 2],
    ['Li, Xiaochen', 1],
    ['Lisi, Oscar', 1],
    ['Meyer, Harry A. & Hinton, Juliana G.', 1],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Pilato, Giovanni & Binda, Maria Grazia', 2],
    ['Pilato, Giovanni & Lisi, Oscar', 2],
    ['Rocha, Alejandra M. & González-Reyes, Andrea X.', 4],
    ['Roszkowska, Milena & Ostrowska, Marta & Kaczmarek, Łukasz', 2],
    ['Wang, Lizhi', 2],
    ['Young, Alexander & Chappell, Benjamin & Miller, William', 1],
    ['Zawierucha, Krzysztof & Dziamiecki, Jakub & Jakubowska, Natalia', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);