function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 1],
    ['Ali, Pir Asmat & Maddison, Wayne P. & Zahid, Muhammad', 1],
    ['Bedoya-Roqueme, Edwin & Lopez-Villada, Samia', 1],
    ['Dean, David Allen', 1],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Dmitri V. Logunov', 1],
    ['Haddad, Charles R. & WHVRáRZVND, Wdqgd', 3],
    ['Mariante, Rafael M. & Hill, David E.', 1],
    ['Peng, Xianjin & Li, Shuqiang', 1],
    ['Pupin, Giovanni B. & Brescovit, Antonio D.', 2],
    ['Richardson, Barry J.', 2],
    ['Sherwood, Danniella & Sharp, Adam', 1],
    ['Tang, Jiaxin & Liang, Wei & Shi, Haitao & Gao, Caixia', 1],
    ['Wesolowska, Wanda & Haddad, Charles R.', 2],
    ['Wesołowska, Wanda & Russell-Smith, Anthony', 4],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);