function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Feijoo, Alexander & Lavelle, Patrick', 1],
    ['James, Samuel W. & Bartz, Marie L. C. & Brown, George G.', 2],
    ['James, Samuel W. & Divina, Gildas Brice', 1],
    ['Misirlioğlu, İbrahim Mete & Stojanović, Mirjana', 1],
    ['Nguyen, Tung T. & Nguyen, Anh D. & Tran, Binh T. T.', 2],
    ['Plisko, Jadwiga D. & Nxele, Thembeka C.', 1],
    ['Plisko, Jadwiga Danuta', 1],
    ['Rota, Emilia', 2],
    ['Steffen, Gerusa Pauli Kist & Steffen, Ricardo Bemfica', 1],
    ['Szederjesi, Tímea & Vavoulidou, Evangelia & Chalkia, Christina', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);