function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abolafia, Joaquín & Peña-Santiago, Reyes', 6],
    ['Allgén, C. A.', 3],
    ['Boström, Sven & Holovachov, Oleksandr', 15],
    ['Gerber, K.', 6],
    ['Holovachov, Oleksandr', 42],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 7],
    ['Mehdizadeh, Sara & Shokoohi, Ebrahim', 4],
    ['Menzel, Rich.', 3],
    ['P. A. A. LOOF', 8],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 8],
    ['Von W. Schneider', 11],
    ['Wilhelm Schneider', 5],
    ['Yeates, Gregor W.', 8],
    ['Zullini, Aldo', 4],
    ['Árpád, Soós', 9],
    ['Other (10)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=153)',
    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);