function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadle, John E.', 1],
    ['David, Patrick & Agarwal, Ishan & Athreya, Ramana', 2],
    ['David, Patrick & Bain, Raoul H. & Truong, Nguyen Quang', 1],
    ['David, Patrick & Vogel, Gernot & Rooijen, Johan Van', 4],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 1],
    ['Guo, Peng & Zhu, Fei & Liu, Qin & Zhang, Liang & Li, Jian X.', 1],
    ['Hakim, Jonathan & Trageser, Scott J. & Ghose, Animesh', 1],
    ['Published, First', 1],
    ['Ziegler, Thomas & Hendrix, Ralf & Thanh, Vu Ngoc & Vogt, Martina', 1],
    ['Ziegler, Thomas & Quyet, Le Khac', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    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);