function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De Moraes, Gilberto J. & Britto, Erika P. J.', 19],
    ['Hajizadeh, Jalil & Javadpour, Mahboubeh & Mohammadi, Leila', 21],
    ['Joharchi, Omid & Shahedi, Alireza', 2],
    ['Karaca, Mehmet & Urhan, Raşit', 24],
    ['Kontschán, Jenõ', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 3],
    ['Lin, Jian-Zhen', 4],
    ['Lindquist, Evert E. & Moraza, Maria L.', 3],
    ['Moraza, María L. & Lindquist, Evert E.', 3],
    ['Moraza, María Lourdes', 3],
    ['Moraza, María Lourdes & Arroyo, Julio & Bolger, Thomas', 4],
    ['Urhan, R.', 3],
    ['Urhan, Raşit', 3],
    ['Urhan, Raşit & Duran, Elif Hilal & Karaca, Mehmet', 4],
    ['Urhan, Raşit & Karaca, Mehmet', 10],
    ['Other (11)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=121)',
    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);