function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 15],
    ['Akrami, Mohammad Ali & Shahedi, Alireza', 3],
    ['Beck, L. & Woas, S.', 4],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 21],
    ['Ebrahimi, Forough & A, Mohammad', 5],
    ['Gol, Tahereh Taghipour & Bagheri, Mohammad', 9],
    ['Ivan, O.', 6],
    ['Koch, C. L.', 18],
    ['Murvanidze, Maka & Cilbircioğlu, Cihan & Özdemir, Esengül', 5],
    ['Murvanidze, Maka & Mumladze, Levan', 20],
    ['Norton, Roy A. & Ermilov, Sergey G.', 6],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 4],
    ['Schatz, Heinrich & Fortini, Lorenzo & Fusco, Tommaso', 5],
    ['Sh & Hajizadeh, J. & M. A & Rafatifard, M.', 5],
    ['Weigmann, G. & Miko, L.', 21],
    ['Other (31)', 48]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=195)',
    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);